| Customization: | Available |
|---|---|
| After-sales Service: | 1 Year |
| Warranty: | 1 Year |
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Precision seamless steel pipe, precision hydraulic seamless steel pipe, cold drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high-precision seamless steel pipe, precision bright seamless steel pipe.
(1) Main varieties of steel pipes: DIN series high-precision precision bright seamless steel pipes, hydraulic system specific steel pipes, automotive manufacturing specific steel pipes
(2) Main standards: DIN2391, DIN2445, EN10305, DIN1629, DIN1630, ASTM A179
(3) Main materials: ST35(E235) ST37.4 ST45(E255) ST52(E355)
(4) Main delivery status: NBK(+N) GBK(+A) BK(+C) BKW(+LC) BKS(+SR)
(5) Main features: The inner and outer walls of the steel pipe have no oxide layer, withstand high pressure without leakage, high precision, high smoothness, no deformation during cold bending, and no cracks during expansion or flattening.
(6) Main applications: Used in various industries such as hydraulic system piping, automotive manufacturing piping, military industry, engineering machinery, railway locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tools, diesel engines, petrochemicals, power stations, boiler equipment, etc.
| Size tolerance | |||||
| OD | Standard tolerance | Special tolerance | |||
| Outer Diameter | GB/T3639 | DIN2391 | EN10305 | O D | thickness |
| 4mm-20mm | ±0.10 mm | ±0.08 mm | ±0.08 mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.10 mm | ±0.08 mm | ±0.08 mm | ±0.08 mm | ±0.08 mm |
| 31mm-40mm | ±0.15 mm | ±0.15 mm | ±0.15 mm | ±0.10 mm | ±0.08 mm |
| 41mm-60mm | ±0.20 mm | ±0.20 mm | ±0.20 mm | ±0.15 mm | ±0.15 mm |
| 61mm-80mm | ±0.30 mm | ±0.30 mm | ±0.30 mm | ±0.20 mm | ±0.20 mm |
| 81mm-120mm | ±0.45 mm | ±0.40 mm | ±0.40 mm | ±0.30 mm | ±0.30 mm |
| GB | ASTM/ASME | DIN | EN | JIS | |||||
| GB/T8162 | 10 | A53 | A | DIN1629 | St37 | EN17121 | St37-2/3 | G3454 | STPG370 |
| GB/T8163 | A106 | A | |||||||
| GB/T3639 | A519 | 1010 | |||||||
| 20 | A53 | B | DIN1629 | St44 | EN17121 | St44-2/3 | G3454 | STPG410 | |
| A106 | B | ||||||||
| A519 | 1020 | ||||||||
| 45 | A1045 | CK45 | |||||||
| Q235 | A519 | 1021 | EN10210-1 | S235JRH | G3444 | STK400 | |||
| EN1097-1 | E235 | ||||||||
| Q345 | A519 | 1524 | DIN1629 | St52 | G3444 | STK500 | |||
| 37Mn5 | J55 | ||||||||
| 35CrMo | 4135 | G4105 | SCM435 | ||||||
| 20Cr | 5120 | SCr420 | |||||||
| 40Cr | 5140 | SCr440 | |||||||
| 15CrMo | SCM415 | ||||||||
| 20CrMo | 4119 | SCM420 | |||||||
| 42CrMo | 4150/4142 | SCM440 | |||||||
| 20CrMnTi | SMK22 | ||||||||
| tandard | Grade | Chemical composition:(%) | |||||||||||
| C | Si | Mn | P≤ | S≤ | Cr | Mo | Cu≤ | Ni≤ | Ti | V | Nb | ||
| GB/T 699 | 10 | 0.07~0.13 | 0.17~0.37 | 0.35~0.65 | 0.035 | 0.035 | ≤0.15 | 0.25 | 0.3 | ||||
| 20 | 0.17~0.23 | 0.17~0.37 | 0.35~0.65 | 0.035 | 0.035 | ≤0.35 | 0.25 | 0.3 | |||||
| 35 | 0.32~0.39 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | ≤0.25 | 0.25 | 0.3 | |||||
| 45 | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | ≤0.25 | 0.25 | 0.3 | |||||
| GB/T3077 | 20Cr | 0.18~0.24 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.70~1.00 | ||||||
| 40Cr | 0.37~0.44 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.80~1.10 | |||||||
| 20CrMo | 0.17~0.24 | 0.17~0.37 | 0.40~0.70 | 0.035 | 0.035 | 0.80~1.10 | 0.15~0.25 | ||||||
| 42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.80 | 0.90~1.20 | 0.15~0.25 | ||||||||
| 20CrMnTi | 0.17~0.23 | 0.17~0.37 | 0.80~1.10 | 1.00~1.30 | 0.04 | ||||||||
| ~0.10 | |||||||||||||
| Material | 10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A213, A315, 30CrMo, Q195, Q215, Q235, Q345, ST35, St37, St45, St52 |
| Surface | Black/ Bright |
| Standard | DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094- 2000, GB/T 8163-1999, JIS G3101 |
| Size | OD 15mm-70mm |
| Thickness 1-12mm | |
| Processing | Cold rolled/ Cold drawn |
| 1. BK (+C) No heat treatment after last cold forming process. | |
| 2. BKW (+LC) After last heat treatment there is a light finishing pass ( cold drawing) | |
| 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. | |
| 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. | |
| 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. | |
| Packing | Woven bag/ Wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. |
| Delivery time | Normally 30-40 working days |
| steel grade | +C(BK) | +LC(BKW) | +SR(BKS) | +A(GBK) | +N(NBK) | |||||||
| Rm(Mpa) | A(%) | Rm(Mpa) | A(%) | Rm(Mpa) | Reh(Mpa) | A(%) | Rm(Mpa) | A(%) | Rm(Mpa) | Reh(Mpa) | A(%) | |
| 10 | 430 | 8 | 380 | 10 | 400 | 300 | 16 | 335 | 24 | 320~450 | 215 | 27 |
| 20 | 550 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440~570 | 255 | 21 |
| 35 | 590 | 5 | 550 | 7 | - | - | - | 510 | 17 | ≥460 | 280 | 21 |
| 45 | 645 | 4 | 630 | 6 | - | - | - | 590 | 14 | 540 | 340 | 18 |
| 25Mn | 650 | 6 | 580 | 8 | 580 | 450 | 10 | 490 | 18 | - | - | - |
| Q355B | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490~630 | 355 | 22 |
| Q420B | 750 | 4 | 620 | 8 | 690 | 590 | 12 | 520 | 22 | 550~700 | 425 | 22 |
| 25CrMo | 720 | 4 | 670 | 6 | - | - | - | - | - | - | - | - |
| 42CrMo | 720 | 4 | 670 | 6 | - | - | - | - | - | - | - | - |
| Equivalent Material referance: | ||||||
| GB | TOCT | ASTM | BS | JIS | NF | DIN |
| 10F | 1010 | 040A10 | XC10 | |||
| 10 | 10 | 10,101,012 | 045M10 | S10C | XC10 | C10,CK10 |
| 20 | 20 | 1020 | 050A20 | S20C | XC18 | C22,CK22 |
| 45 | 45 | 1045 | 080M46 | S45C | XC45 | C45,CK45 |
| 30CrMo | 30XM | 4130 | 1717COS110 | SCM420 | 30CD4 | |
| 42CrMo | 4140 | 708A42 | 42CD4 | 42CrMo4 | ||
| 708M40 | ||||||
| 35CrMo | 35XM | 4135 | 708A37 | SCM3 | 35CD4 | 34CrMo4 |
| Material Chemical Composition(%) | ||||||||
| Standard | Steel Grade | C | Si | Mn | P | S | Cr | Mo |
| ASTM A519 | 4130/30CrMo | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | ≤0.04 | ≤0.04 | 0.8-1.1 | 0.15-0.25 |
| 4140/42CrMo | 0.38-0.43 | 0.15-0.35 | 0.75-1 | ≤0.04 | ≤0.04 | 0.8-1.1 | 0.15-0.25 | |
Q: Are you trading company or manufacturer?
A: We are professional manufacturer for steel pipes,and our company also is a very professional and technical foreign trade company for steel products. We have more export experience with competitive price and best after-sales service. Apart from this,we can provide a wide range of steel products to meet the requirement of customer.
Q:Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not. Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra?
A: The sample could can provide for customer with free,but the freight will be covered by customer account. The sample freight will be returned to customer account after we cooperate.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,Wechat and WhatsApp will be online in 24 hours. Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.
Q: Do you have any certifications?
A: Yes,that's what we guarantee to our clients. we have IS09000,IATF16949 certinicate,ISO 14001 certificates etc.Our products are of high quality and we have professional engineers and development team.
Q: What is your terms of payment?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipmenit or paid against copy of B/L within 5 working days. 100% Irrevocable L/C at sight is favorable payment term as well.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
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