Top Quality Seamless Tubes for Heat Exchangers
Changzhou Tenjan Steel Tube Co., Ltd.- Usage：Pipeline Transport, Boiler Pipe, Hydraulic,Automobile Pipe, Oil,Gas Drilling, Machinery Industry, Chemical Industry, Construction & Decoration
- Surface Treatment：Polished
- Material：Carbon Steel
- Warranty：3 Years
- Type：Seamless
- Technique：Cold Drawn
Base Info
- Specification：Varnish, Plastic Caps, in Bundled, or Customized
- Transport Package：Sea Transportation
- Tolerance：±0.15mm
- Tech：Cold Drawn , Cold Rolled
- Length：Less Than 11.8m
- Wall Thickness：1-20mm (0.04 Inch - 0.78 Inch)
- Outer Diameter：10-120mm (0.4 Inch - 4.7 Inch)
- Carbon Steel：GB,T 8162 & 8163 & 3639
- Section Shape：Round
- Trademark：Tenjan
- Origin：China
- HS Code：7304319000
- Production Capacity：50000 Ton,Year
Description
Material / Grade
Carbon Steel:
GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105
ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050
DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53
JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C
JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C
Alloy Steel:
GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND)
ASTM A519: 5120, 5140, 4130, 4135, 4140
DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5
JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4
JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420
Tolerance
Tolerance ±0.15mm,Superior products ±0.05mm, Can be customized according to customer's requirements
Technique
Cold Drawn / Cold Rolled
Shape
Round
Further Processing for Steel Tubes
Final Annealing, Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking
2.Production process of seamless steel pipe
Row Material storage/inspection and cutting by saw machine
Hot Perforaction
Squeeze head and raw tube inspection
Cycling pickling
Cycling cold drawing/roling
Cycling annealing
Straightening
Eddy current inspection
Products inspection and test
Tenjan is specialized in custom production of high quality seamless steel tubes under international standards ASTM A519, ASTM A106, ASTM A500, ASME SA500, DIN2391, DIN1629, EN10305-1, DIN17121, EN10297-1, JIS3441, JIS3444 and JIS3445. We provide small batch customization service, especially for small and medium-size enterprises. Raw material, internal and external dimensional tolerances and consistency, internal and external surface roughness, straightness, mechanical properties, eccentricity, special shape, alloy steel, small-diameter thick-walled seamless steel tubes all can be customized. The production range for outer diameter is from 10 to 120mm and for wall thickness is from 1 to 20mm
Why Choose Tenjan?
(1) Large Scale Production,Strong R&D Capability
The annual production capacity can reach 60,000 tons under years of development. Every-year R&D investment and a team of technicians enable Tenjan with strong R&D capability. Tenjan has full system of production with advanced equipment, such as perforation, pickling, cold rolling, cold drawing, straightening, flaw detection, tensile test and machining.
(2) Quality Control
Every batch of products can be traced and guaranteed by the raw material certificate and steel tube quality certificate. Complete quality control system, following ISO9001, to ensure a full inspection process such as pull force test, chemical composition test and eddy current detection.
(3) Certification
The chairman of Tenjan, Mr. Wensheng Gu, is one of the major constitutors of national standard Couplers for Rebar Mechanical Splicing JG/T 163-2013. And Tenjan has won the Quality System Certificates of ISO9001 and IATF16949.
(4) Major Customer Case
We have long-term relationship with customers such as BMW, MCC, CNNP, CRRC, Midea, Sinohydro, China Pingmei, China Academy of Building Research and so on.
(5) Export Countries
Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total six continents over 20 countries, and which has been consistently trusted by customers.
(6) Customer Service
Tenjan provides considerate service to every customer with fast feedback, quality track and technical support.