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HPK tubes Seamless precision steel tubes for the manufacture of pistons · E355 (St 52) · E460N (StE 460) · C45E (CK45)
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Brand Name:Best
Model Number:40mm--360mm
Certification:API/CE/ISO/PED
Price:500 usd/ton
Payment Terms:L/C, D/A, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:100000 Ton/Year
Delivery Time:30 days normally, according to order quantity
Company Data
Site Member
Contact Person
amy
Business Type:
Manufacturer Distributor/Wholesaler Agent Importer Exporter Trading Company Seller Other
Officials:
China Factory : Suzhou Industrial Park, JiangSu Province,China
Quality:
Quality Certifitation Available
Product Details
Company Profile
Product Details
Product Name : 440c stainless steel round bar Round Bar : Diameter 3-800mm
AISI 4130 is a low alloy chromium molybdenum (CrMo) steel. It has a lower
carbon level than 4140
giving improved weldability and machinability. It is widely used in
oil field applications
Scope
The specification defines the requirements for AISI 4130 hot rolled
CrMo bars hardened and tempered to meet 75ksi minimum yield, 22HRc
maximum, in line with API 6A
U-bent tubes
Standard
metric dimensions EN 10216-2, tolerances acc. to EN 10305
inch dimensions ASME SA 556 C 2
ASTM A 179M 1990a, ASME SA 179M, ASME Section II part A
Dimensions
metric dimensions 10 x 1 mm to 30 x 2.5 mm
inch dimensions 19.05 x 1.65 mm to 25.4 x 3.4 mm
Tolerances
metric dimensions acc. to EN 10305-1
inch dimensions outside diameter acc. to EN 10305-1 wall thickness 0/+20 % (SA 556M)
Materials Steel grade (EN) Steel grade (ASTM/ASME) metric dimensions P235 GH TC 1 SA 556 C 2
inch dimensions P235 GH TC 1 A 179/SA 179 other materials on request
Certification 3.1 acc. to EN 10204
other certifications on request
Boiler and heat exchanger tubes
Seamless boiler tubes
Standard EN 10216-2
other standards on request
Dimensions 13.5 x 1.8 mm to 610 x 30 mm
other dimensions on request
Tolerances outside diameter and wall thickness acc. to EN 10216-2
Lengths 5 to 7 m, partly 10 to 14 m
other lengths and fixed lengths on request
Materials Steel grade (EN) Steel grade (JIS) Steel grade (ASTM/ASME)
P235 GH TC 1 ST B 340 A/SA 192
P235 GH TC 2 ST B 410 A/SA 210
16Mo3 ST B 510 A/SA 213
13CrMo4-5 ST BA 12 T5, T11, T12, T22, T91
10CrMo9-10 ST BA 22
ST BA 24
other materials on request
Surface protection on request
Marking manufacturer stamp, EN standard, material, size, heat number or identification number,
if applicable test category and tube number (depending on material)
Leak testing water pressure or electromagnetic testing acc. to EN 10246-1 (SEP 1925)
other testing on request Certification 3.1 acc. to EN 10204 3.2 acc. to EN 10204 for alloyed boiler
3.1 EN 10217-1 (DIN 1626)
Rohre aus unlegiertem Stahl mit festgelegten Eigenschaften
bei Raumtemperatur
· Herstellverfahren,
Fertigungsablauf,
Lieferzustand siehe EN 10217-1 Tab. 1
· Anwendungsbereiche gem. Regelwerke DVGW, TRB, TRD,
PED und ADW-Merkblätter
· Güte TR 1 ohne Wärmebehandlung oder
normalgeglüht oder Schweißnahtbereich
normalgeglüht oder normalisierend
gewalzt
· Werkstoffe Nr. / EN / (DIN) 1.0107 P 195 TR 1 (St 33)
1.0254 P 235 TR 1 (St 37.0)
1.0258 P 265 TR 1 (St 44.0)
1.0108 P 195 TR 2
1.0255 P 235 TR 2
1.0259 P 265 TR 2
· Schweißverfahren - Gaspressschweißen
- HFI-Schweißen
- UP-Schweißen für Längs- und
Spiralnaht
· Abmessung
DA 10,2 bis 2.540 mm
· Wanddicke bis 40 mm
· Lieferlänge 6 m, 12 m, teilweise bis 18 m
· Maßtoleranz
DA ≤ 219,1 +/- 1 % oder +/- 0,5 mm
jeweils der größere Wert
> 219,1 +/- 0,75 %, max. +/- 6 mm
jeweils der größere Wert
WD +/- 10 %, min. +/- 0,3 mm
und gem. EN 10217-1 Tab. 6
jeweils der größere Wert
· Geradheit 1,5 : 1.000 für das Rohr
örtlich 3 : 1.000 mm
· Schweißnahtüberhöhung
- stumpfgeschweißt innen + 0,5 mm / + 0,05 × WD
außen gewalzt
- elektropressgeschweißt innen 1,5 mm
außen abgearbeitet
- UP-geschweißt,
SAW-Rohre innen und außen
< 12,5 mm WD: max. 3,5 mm
> 12,5 mm WD: max. 4,8 mm
· Genaulänge
< 406,4 6.000 mm + 10 mm
6.000 > 12.000 mm + 15 mm
> 12.000 mm n.V.
> 406,4 6.000 mm + 25 mm
6.000 > 12.000 mm + 50 mm
> 12.000 mm n.V.
· Unrundheit
< 406,4 wie DA-Grenzwert
> 406,4 < 2 %
· Kennzeichnung Werksstempel, Kurzzeichen,
Schweißverfahren, EN-Norm,
Stahlsorte, bei APZ Abnehmerzeichen
und Identifizierungsnummer
· Zeugnis
WZ EN 10204-2.2
APZ EN 10204-3.1 oder 3.2
3.2 EN 10217-2 (DIN 1626)
Elektrisch geschweißte Rohre aus unlegierten und legier-
ten Stählen mit festgelegten Eigenschaften bei erhöhten
Temperaturen
· Herstellverfahren,
Fertigungsablauf,
Lieferzustand siehe EN 10217-2 Tab. 1
· Anwendungsbereiche gem. Regelwerke DVGW, TRB, TRD,
PED und ADW-Merkblätter
· Güte TC 1 = Prüfklasse 1 (ohne US-Prüfung)
TC 2 = Prüfklasse 2 (mit US-Prüfung)
· Werkstoffe Nr. / EN / (DIN) 1.0348 P 195 GH (St 33)
1.0345 P 235 GH (St 37.8)
1.0425 P 265 GH (St 42.8)
1.5415 16M03 (15M03)
· Schweißverfahren - Gaspressschweißen
- HFI-Schweißen
- UP-Schweißen für Längs- und
Spiralnaht
· Abmessung
DA 10,2 bis 2.540 mm
· Wanddicke bis 40 mm
· Lieferlänge 6 m, 12 m, teilweise bis 18 m
· Maßtoleranz
DA ≤ 219,1 +/- 1 % oder +/- 0,5 mm
jeweils der größere Wert
> 219,1 +/- 0,75 %
WD +/- 10 %, min. +/- 0,3 mm
und gem. EN 10217-2 Tab. 7
jeweils der größere Wert
· Geradheit 1,5 : 1.000 für das Rohr
örtlich 3 : 1.000 mm
· Schweißnahtüberhöhung
- stumpfgeschweißt innen + 0,5 mm / + 0,05 × WD
außen gewalzt
- elektropressgeschweißt innen 1,5 mm
außen abgearbeitet
- UP-geschweißt,
SAW-Rohre innen und außen
< 12,5 mm WD: max. 3,5 mm
> 12,5 mm WD: max. 4,8 mm
· Genaulänge
< 406,4 6.000 mm + 10 mm
6.000 > 12.000 mm + 15 mm
> 12.000 mm n.V.
> 406,4 6.000 mm + 25 mm
6.000 > 12.000 mm + 50 mm
> 12.000 mm n.V.
· Unrundheit
< 406,4 wie DA-Grenzwert
> 406,4 < 2 %
· Kennzeichnung Werksstempel, Kurzzeichen,
Schweißverfahren, EN-Norm,
Stahlsorte, bei APZ Abnehmerzeichen
und Identifizierungsnummer
· Zeugnis
WZ EN 10204-2.2
APZ EN 10204-3.1 oder 3.2
Seamless stainless instrumentation tubes
Standard EN 10216-5 TC1 resp. TC2, AD2000-W2 Einbaurohre resp. no Einbaurohre,
ADW10, ASTM A 312, ASME SA 312, NACE MR 0175/ISO 15156-3
Dimensions 4 x 0.5 mm to 42 x 3 mm
other dimensions on request
Tolerances acc. to EN 10305-1 and ASTM A 269/999 (for O.D. ≤ 30 mm)
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions cold finished, bright annealed or pickled
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301/06 TP 304/304L
1.4404 TP 316L
1.4541 TP 321
1.4571 TP 316Ti / UNS S31635
Certification 3.1 or 3.2 (in case of AD2000-W2) acc. to EN 10204
Seamless stainless tubes, cold finished
Standard EN 10216-5 TC1 resp. TC2, AD2000-W2 Einbaurohre resp. no Einbaurohre,
ADW10, ASTM A 312, ASME SA 312, NACE MR 0175/ISO 15156-3
Dimensions 12.7 x 2.11 to 139.7 x 4 mm
other dimensions on request
Tolerances acc. to EN ISO 1127D3/T3 and ASTM A 312
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions cold finished, bright annealed or annealed and pickled
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301/06 TP 304/304L
1.4404 TP 316L
1.4541 TP 321
1.4571 TP 316Ti / UNS S31635
Certification 3.1 or 3.2 (in case of AD2000-W2) acc. to EN 10204
Heav y, standard wall and mechanical tubes
Seamless hot rolled tubes for steel constructions
Standard EN 10210-1/-2
Dimensions 10.2 x 1.6 mm to 711 x 100 mm
other dimensions on request
Lengths 4 to 15 m
other lengths and fixed lengths on request
Materials Material number Steel grade (EN)
1.0576 S355 J2H
1.0539 S355 NH
other materials on request
Marking manufacturer stamp, EN standard, material, delivery condition, size,
heat number or identification number
Testing on request
Certification 3.1 acc. to EN 10204
other certifications on request
Seamless hot rolled tubes for pressure requirements
Standard (part 1) EN 10216-1
Dimensions 10.2 x 1.6 mm to 711 x 14.2 mm
other dimensions on request
Lengths 4 to 15 m
other lengths and fixed lengths on request
Materials Material number Steel grade (EN)
1.0254 P235 TR 1 + TR 2
1.0258 P265 TR 1
other materials on request
Standard (part 3) EN 10216-3
Dimensions 10.2 x 1.6 mm to 711 x 100 mm
other dimensions on request
Lengths 4 to 15 m
other lengths and fixed lengths on request
Materials Material number Steel grade (EN)
1.0562 P355 N TC1 (usually in
combination with E355 N
and S355 J2H)
other materials on request
Marking manufacturer stamp, EN standard, material, delivery condition, size, heat number or identification number
Certification 3.1 acc. to EN 10204, other certifications on request
Seamless hydraulic and pneumatic line pipes – BENTELER Zistaplex®
Standard EN 10305-4
other standards such as EN 10305-1/-2/-3 on request
Dimensions 4 x 0.5 mm to 42 x 6 mm
Lengths 6 m
other lengths and fixed lengths on request
Delivery conditions +N (NBK)
other delivery conditions on request
Materials Steel grade (EN)
E235
E355
other materials on request
Surface treatment outside galvanized (min. 8 μm), CR-VI-free passivation,
additional organic coating (EPOXY ≤ 50 μm), RAL 9005, black
other colors, coatings and thicknesses on request
Marking continuous marking along the entire tube length
Certification 3.1 acc. to EN 10204
other certifications on request
Seamless stainless instrumentation tubes
Standard EN 10216-5 TC1 resp. TC2, AD2000-W2 Einbaurohre resp. no Einbaurohre,
ADW10, ASTM A 312, ASME SA 312, NACE MR 0175/ISO 15156-3
Dimensions 4 x 0.5 mm to 42 x 3 mm
other dimensions on request
Tolerances acc. to EN 10305-1 and ASTM A 269/999 (for O.D. ≤ 30 mm)
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions cold finished, bright annealed or pickled
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301/06 TP 304/304L
1.4404 TP 316L
1.4541 TP 321
1.4571 TP 316Ti / UNS S31635
Certification 3.1 or 3.2 (in case of AD2000-W2) acc. to EN 10204
Seamless stainless tubes, cold finished
Standard EN 10216-5 TC1 resp. TC2, AD2000-W2 Einbaurohre resp. no Einbaurohre,
ADW10, ASTM A 312, ASME SA 312, NACE MR 0175/ISO 15156-3
Dimensions 12.7 x 2.11 to 139.7 x 4 mm
other dimensions on request
Tolerances acc. to EN ISO 1127D3/T3 and ASTM A 312
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions cold finished, bright annealed or annealed and pickled
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301/06 TP 304/304L
1.4404 TP 316L
1.4541 TP 321
1.4571 TP 316Ti / UNS S31635
Certification 3.1 or 3.2 (in case of AD2000-W2) acc. to EN 10204
Seamless heat exchanger tubes
Standard
metric dimensions EN 10216-2, tolerances acc. to EN 10305
inch dimensions ASTM A 179M-1990a, ASME SA 179M, ASME Section II part A
Dimensions
metric dimensions 10 x 1 mm to 30 x 2.5 mm
inch dimensions 19.05 x 1.65 mm to 25.4 x 3.4 mm other dimensions on request
Lengths lengths and fixed lengths on request
Materials Steel grade (EN) Steel grade (ASTM/ASME) metric dimensions P235 GH TC 1 SA 556 C 2
inch dimensions P235 GH TC 1 A 179/SA 179
other materials on request
Marking manufacturer stamp, material, size, heat number or identification number
Leak testing
metric dimensions electromagnetic testing acc. to EN 10246-1 (SEP 1925)
inch dimensions electromagnetic testing acc. to ASME SA 450, test hole 0.8 mm
Certification 3.1 acc. to EN 10204
other certifications on request
U-bent tubes
Standard
metric dimensions EN 10216-2, tolerances acc. to EN 10305
inch dimensions ASME SA 556 C 2
ASTM A 179M 1990a, ASME SA 179M, ASME Section II part A
Dimensions
metric dimensions 10 x 1 mm to 30 x 2.5 mm
inch dimensions 19.05 x 1.65 mm to 25.4 x 3.4 mm
Tolerances
metric dimensions acc. to EN 10305-1
inch dimensions outside diameter acc. to EN 10305-1 wall thickness 0/+20 % (SA 556M)
Materials Steel grade (EN) Steel grade (ASTM/ASME) metric dimensions P235 GH TC 1 SA 556 C 2
inch dimensions P235 GH TC 1 A 179/SA 179 other materials on request
Certification 3.1 acc. to EN 10204
other certifications on request
Chemical composition
material | C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
35CrMoA | 0.34-0.39 | 0.17-0.37 | 0.40-0.70 | 0.015 max | 0.010 max | 0.80-1.10 | 0.30 max | 0.15-0.25 | 0.25max |
42CrMoA | 0.39-0.45 | 0.17-0.37 | 0.50-0.80 | 0.015 max | 0.010 max | 0.90-1.20 | 0.20 max | 0.20-0.25 | 0.25max |
Equivalent Steel Grade
DIN | ASTM A29 | JIS G4105 | BS | GB | EN ISO 10250 |
1.7225 | 4140 | SCM440 | 708M40/708A42/709M40 | 42CrMo | 42CrMo4 |
Mechanical Properties
Grade | Tensile Strength Mpa | Yield Strength Mpa | Elongation % | Reduction % | -40℃Akv2/J | Hardness |
10.9 | ≥1040 | ≥940 | ≥9 | ≥48 | ≥50 | HRC32-39 |
8.8 | ≥830 | ≥660 | ≥12 | ≥52 | ≥70 | HRC23-34 |
Seamless hot rolled tubes for mechanical engineering
Standard EN 10297-1
Dimensions 10.2 x 1.6 mm to 711 x 100 mm
other dimensions on request
Lengths 4 to 15 m
other lengths and fixed lengths on request
Delivery conditions +AR
+N
other delivery conditions on request
Materials Material number Steel grade (EN)
1.0308 E235
1.0580 E355
1.0536 E470
other materials on request
Marking manufacturer stamp, EN standard, material, delivery condition, size,
heat number or identification number
Testing water pressure testing or leak testing acc. to EN ISO 10893-1
other testing on request
Certification 3.1 acc. to EN 10204
other certifications on request
Seamless steel tubes for machining
Standard EN 10294-1
Dimensions 30 x 20 mm to 250 x 120 mm
other dimensions on request
Lengths 4 to 8 m
other lengths and fixed lengths on request
Materials Material number Steel grade (EN)
1.0580 E355
1.0592 E355 J2
1.0599 E420 J2
1.0536 E470
1.0644 E590 K2
other materials on request
Marking manufacturer stamp, EN standard, material, delivery condition, size,
heat number or identification number
Testing on request
Certification 3.1 acc. to EN 10204
other certifications on request
Hard chromed bars for piston rod applications
Dimensions outside diameter 8 to 250 mm
Tolerances outside diameter 8 to 18 mm acc. to f8
outside diameter 20 to 250 mm acc. to f7
other tolerances on request
Materials Material number Steel grade (EN)
1.5217 20MnV6
1.7225* 42CrMo4+QT
1.1191* C45E
1.1213* Cf 53 (DIN)
1.1303* 38MnVS6
other materials on request
*also induction hardened
Surface chromed
double chromed and NICROM (nickel/chrome) on request
Ra max. 0.25 µm
Chrome
thickness min. 15 μm for tubes with an outside diameter of 8 to 18 mm min. 20 μm for tubes with an outside diameter of 20 to 250 mm micro hardness min. 850 HV 0.1
Corrosion resistance min. 200 h in NSS rating 9Testing corrosion testing acc. to ISO 9227Certification 3.1 acc. to EN 10204
other certifications on request
Standard
metric dimensions EN 10216-2, tolerances acc. to EN 10305
inch dimensions ASTM A 179M-1990a, ASME SA 179M, ASME Section II part A
Dimensions
metric dimensions 10 x 1 mm to 30 x 2.5 mm
inch dimensions 19.05 x 1.65 mm to 25.4 x 3.4 mm other dimensions on request
Lengths lengths and fixed lengths on request
Materials Steel grade (EN) Steel grade (ASTM/ASME) metric dimensions P235 GH TC 1 SA 556 C 2
inch dimensions P235 GH TC 1 A 179/SA 179
other materials on request
Marking manufacturer stamp, material, size, heat number or identification number
Leak testing
metric dimensions electromagnetic testing acc. to EN 10246-1 (SEP 1925)
inch dimensions electromagnetic testing acc. to ASME SA 450, test hole 0.8 mm
Certification 3.1 acc. to EN 10204
other certifications on request
Welded stainless decoration tubes
Standard EN 10296-2
Dimensions 10 x 1 mm to 300 x 4 mm
other dimensions on request
Tolerances acc. to EN ISO 1127 or ASTM A 269/999, D4/T3 or D3/T3 or D2/T2
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions metallically bright or polished 240/320
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301 TP 304
Certification 2.2 or 3.1 acc. to EN 10204
Welded square and rectangular tubes
Standard EN 10296-2
Dimensions 10 x 10 x 1 mm to 200 x 200 x 6 mm
20 x 10 x 1.2 mm to 250 x 150 x 4 mm
other dimensions on request
Tolerances acc. to EN ISO 1127 or ASTM A 269/999
Lengths 5 to 7 m
other lengths and fixed lengths on request
Delivery conditions metallically bright or polished 240
Materials Material number Steel grade (ASTM/ASME/AISI)
1.4301 TP 304
1.4571 TP 316Ti
Certification 2.2 or 3.1 acc. to EN 10204
Nahtlose Stahlrohre für Druckbeanspruchungen
2.1 EN 10216-1 bzw. EN 10216-3 (DIN 1629)
Rohre aus unlegiertem Stahl bzw. legiertem Feinkornstahl
mit festgelegten Eigenschaften bei Raumtemperatur
· Anwendungsbereich gem. Regelwerke DVGW, TRB, TRD
und ADW-Merkblätter
· Güte TR 1/ TR 2 umgeformt oder normalgeglüht
oder normalisierend umgeformt
TR 2 normalgeglüht
· Werkstoffe Nr. / EN / (DIN) 1.0107 P 195 TR 1 (St 33)
1.0254 P 235 TR 1 (St 37.0)
1.0258 P 265 TR 1 (St 44.0)
1.0562 P 355 N (St 52.0)
1.0108 P 195 TR 2
1.0255 P 235 TR 2
1.0259 P 265 TR 2
· Lieferlänge 4 bis 7 m oder doppelte Länge
· Abmessungsbereich
DA 10,2 bis 711 mm
· Wanddicke bis 100 mm
· Genaulänge < 6.000 mm + 10 mm
6.000 > 12.000 + 15 mm
> 12.000 n. V.
· Geradheit 1,5 : 1.000 für das Rohr
örtlich 3 : 1.000
· Rohrtoleranz
DA +/- 1 % oder +/- 0,5 mm
jeweils der größere Wert
· Wandtoleranz
≤ 219,1 DA +/- 12,5 % min. +/- 0,4 mm
jeweils der größere Wert
> 219,1 DA +/- 20 bis +/- 10 % und
gem. EN 10216-1 Tab. 6 bzw.
EN 10216-3 Tab. 9
· Kennzeichnung Werksstempel, EN-Norm, Stahlsorte
· Zeugnis
WZ EN 10204-2.2
APZ EN 10204-3.1 oder 3.2
· Umstempelungsgenehmigung
vorhanden
2.2 EN 10216-2 (DIN 17175)
Rohre aus unlegiertem und legiertem Stahl mit festgelegten
Eigenschaften bei erhöhten Temperaturen
· Anwendungsbereich Kesselrohre mit werkstoffbezogenen
Temperaturen ohne Trennung
nach Drücken
· Güte TC 1 = Prüfklasse 1 (ohne US-Prüfung)
TC 2 = Prüfklasse 2 (mit US-Prüfung)
· Werkstoffe Nr. / EN / (DIN) 1.0348 P 195 GH (UH 1)
1.0345 P 235 GH (St 35.8 / H 1)
1.0425 P 265 GH (St 45.8)
1.5415 16 Mo 3 (15 Mo 3)
1.7335 13 CrMo 4-5 (13 CrMo 44)
1.7380 10 CrMo 9-10 (10 CrMo 910)
· Lieferlänge 5 bis 7 m oder doppelte Länge
· Abmessungsbereich
DA 10,2 bis 711 mm
· Wanddicke bis 100 mm
· Genaulänge nach Vereinbarung
· Geradheit 1,5 : 1.000 für das Rohr
örtlich 3 : 1.000 mm
· Rohrtoleranz
DA +/- 1 % oder +/- 0,5 mm
jeweils der größere Wert
DI +/- 1 % oder +/- 2 mm
jeweils der größere Wert
· Wandtoleranz
≤ 219,1 DA +/- 12,5 % +/- 0,4 mm
jeweils der größere Wert
> 219,1 DA +/- 10 bis +/- 20 %
weitere Grenzabmaße siehe EN 10216-2
Tabellen 7–11
· Kennzeichnung Werksstempel, EN-Norm, Stahlsorte,
Schmelzen-Nr, Prüfklasse TC 1,
bei unlegiert Prüfklasse TC 2 Abneh-merzeichen,
Identifizierungsnummer
· Abnahmeprüfzeugnis EN 10204-3.1
· Amtliche Regelwerke DVGW, TRD-, TRB-Richtlinien, PED,
ADW-Merkblätter
· Umstempelungsgenehmigung
vorhandenHoned or skived and roller burnished cylinder tubes
Standard EN 10305-1/-2
Dimensions 30 x 5 mm to 300 x 25 mm
Tolerances outside diameter acc. to EN 10305-1/-2
inside diameter acc. to H8, ISO 286 part 2
Lengths 5 to 8 m
other lengths and fixed lengths on request
Delivery conditions +SR (BKS)
Materials Steel grade (EN)
E355
other materials on request
Surface roughness (inside) Ra max. 0.3 µm acc. to EN ISO 4287
Certification 3.1 acc. to EN 10204
other certifications on request
Cylinder tubes suitable for honing or skiving and roller burnishing
Standard EN 10305-1/-2
Dimensions 30 x 5 mm to 300 x 25 mm
Tolerances outside diameter acc. to EN 10305-1/-2
Delivery conditions +SR
Materials Steel grade (EN)
E 355
other materials on request
Surface treatment inside suitable for honing or skiving and roller burnishing
Certification 3.1 acc. to EN 10204
other certifications on request
Surface Treatment Bar: Origin Black, Origin Annealing bright, Turned, Peeled, Grinded
Heat Treatment/ Anealing
1) Forging
Preheat the steel carefully, then raise the temperature to
1150-1200°C for forging. Do not forge below 850°C.
2)Annealing
Heat the AISI 4140 slowly to 800-850°C and allow enough time for
the steel to be thoroughly heated. Cool slowly in the furnace to
480°C followed by air cooling.
3)Stress Relieving
When parts are heavily machined, ground or otherwise subject to
cold work, stress relieving will be beneficial prior to hardening.
4)Hardening
AISI 4140 steel is usually supplied ready heat treated to 18-22HRC.
If further heat treatment is required annealed AISI 4140 should be
heated slowly to 840-875°C and after adequate soaking at this
temperature quench in oil. Temper as soon as the tools reach room
temperature.
5)Tempering
Heat the AISI 4140 carefully to a suitable temperature selected by
reference to a tempering chart or table (usually between 550-700°C,
soak at the temperature for 2 hours per 25mm of ruling section,
then allow to cool in air. Tempering between 250-375°C is not
advised as tempering within this range will seriously reduce the
impact value.
Quality :
Our products will be from black round bar. We will order the raw material from first class steel making companies to guarantee the inner quality. You can also lock the raw material manufacturer for your order.
We will continually improves and expands the quantity and quality
of our product which exactly meet customers need. We do whatever it
takes to make our clients happy.
We will develop long-term commercial and technical partnerships
with customers. And we are committed to continual quality
improvement of all internal processes. The success of our quality
program is affirmed by our strong customer retention rate.
Certification :
Achieving the ISO 9001:2008 Certification is just one example of
our Products’ dedication to quality and continuous improvement.
Each employee is responsible for understanding company expectations
and adhering to the procedures of our Quality Management System.
Our Products ensures customers receive the material ordered with
accurate supporting paperwork. Customers can count on proper
documentation, on-time performance and effective follow-up.
Our company
Our story
Since beginning operation in 1996, We has been dedicated to
providing more than just material supply, We has helped customers
reduce costs and improve the bottom line. This approach to
partnering with customers has made our Products a leader among
Steel Round bar and one of the fastest growing companies in China.
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Company Profile
BEST PIPELINE EQUIPMENT CO.,LTD
Best Alloy Engineering Alloy Pipe as s a reference point for excellence in
the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties
for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
The Company was founded in 1996 on the buttwelding fittings , forged flanges and steel pipes
with the aim of becoming a one-stop solution partner for their clients.
Best Alloy Engineering Alloy Pipe is one group company !
The company ’s business model is characterized by complete control of the supply chain, with
integrated production, stock and distribution operations. A strong market image reinforced by
genuine trust has enabled very rapid growth in all areas of the world.
It fixes assets of 8 million dollar, covers an area of 60,000 square meters.
In Best Alloy Pipe Engineering , there are more than 150 employees
with strong technical faculty in our company ,including 15 engineers, and 16 technicians.
Owning advanced flanges and tube supporting the production lines, the company has high technology skills in
forge and press, If push system, machining, cold forming, hot extrusion and heat treatment .
In addition, our factory also has the capabilities of chemical analysis, metallurgical analysis,
physical experiment, nondestructive testing and other advanced detection. Therefore, Best
Pipeline could produce different ranges of stainless steel, alloy steel, carbon steel flanges,
elbows, tees, reducers, caps, big bend, the socket series of pipeline components with high and
medium pressure, and various specifications, material steel pipe according to international and
domestic standards.
Best Alloy Pipe has a manufacturing license in
the field of
the petroleum, petrochemical, chemical, shipbuilding and other industries. The products have been widely used
in marine, power generation, natural gas, chemicals, chemical, petroleum, pharmaceutical, coal, aviation,
construction, water supply and many other fields.
In 2003, the company has provided a lot of well-known foreign trade enterprises to the domestic
OEM products, and several foreign guests of audits and visits, which makes the company win the
domestic and foreign customers trust and praise. Along with the company's expansion command,
it has obtain the right to import and export goods in 2004, developing a direct business dealings
with Germany , Poland , Belgium , the United States, Russia, Australia, Brazil, Iran, Dubai, Paraguay,
Chile, Argentina, and more than 40 other countries. Now Best Pipeline has grown into a star company
gathered production, manufacturing, domestic and foreign sales of other diversified businesses.
Best Pipeline uses high-quality products and good service to
establish a good corporation image
and good reputation, using a reasonable price to win customers’ trust and occupy the market.
The company will always insist on putting science and technology in the first and make every
effort to develop new product as customers’ requirements.
The company will always pursuit excellence along with the brilliant corporation spirit, and always
adhere to the purpose of "Quality first, Customer satisfaction", to provide customers with qualified
products and good service
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