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BRIEF INTRODUCTION
HOME ≡ PRODUCTS ≡ Stainless tube
Stainless Seamless tube
Automobile industry
The main use of stainless steel is in the exhaust system, which accounts for more than half of the total amount of stainless steel used in automobiles, with 80% being ferritic stainless steel. The exhaust gas generated by the car engine flows out of the muffler through the exhaust intake pipe, front pipe, hose, converter, and center pipe. The commonly used steel grades for exhaust systems include 409L, 436L, etc. The automobile muffler mainly uses stainless steel welded pipes. According to calculations, stainless steel pipes used in automobiles account for approximately 1.5% of the total downstream usage of stainless steel pipes, while the proportion of seamless and welded stainless steel pipes used is approximately 2:1.
2. Petrochemical industry, including fertilizer industry
There is a high demand for stainless steel pipes, and the industry mainly uses stainless steel seamless pipes, including specifications such as 304, 321, 316, 316L, 347, 317L, etc., with an outer diameter of around ¥ 18- ¥ 610 and a wall thickness of around 6mm to 50mm
Main steel grades and grades of stainless steel


Name


StandardsSize


Seamless tube


TP304, TP304L, TP304H, TP316,

 TP316H, TP316Ti, TP316L, TP321,

TP321H, TP347H, TP347HFG, 904L, TP310H, 

TP310S, TP317,TP317L, TP316LMo

O.D6.0mm~830mm


U- TUBE


φ12-φ38mm, 壁厚0.5-4mm
Seamless steel pipes, duplex steels, and nickel based alloy products made of various materials


Name


Standards/AISINotice



Austenitic stainless steel



TP304, TP304L, TP304H, TP316, TP316H, 

TP316Ti, TP316L, TP321,

TP321H, TP347H, TP347HFG, 904L, 

TP310H, TP310S, TP317,

TP317L, TP316LMo≥2.5; etc


Duplex Stainless and  Super duplex Stainelss 


S31803; S32205; S31500; S32750


Nickel alloy tube


N08825, N08904, N08028, N08800
Detailed classification and specifications of stainless steel pipe products


Standasrds


GradeSize


ASTM A213、ASME SA213


TP304,TP304H,TP316,
TP316, TP316L,TP321		OD: 12.7-159mm
WT: 0.5-8mm

GB13296


JIS3463



 DIN17458、EN10216-5



GB14976


TP304H,TP310H,
TP316H,TP321H,
TP347H,TP347HFG		OD: 33-273mm
WT: 2-20mm


GB 5310



ASTM A312、ASME SA312



ASTM A269 、ASME SA269



JIS G3459



DIN17456


TP304,TP304L,
TP304H, TP316,
TP316H,TP316Ti,
TP316L,TP321,
TP316Mo≥2.5		OD: 10.0-830mm

WT: 1.65-45mm


Classification Society Certified Stainless Steel Pipe：

ABS、BV、CCS、
DNV、GL、LR、RINA、NK


DIN17458


GB/T14976
EN10216-5
ASTM A312、ASME SA312
JIS G3459


ASTM A789、ASME SA789


S31803; S32205,
S31500; S32750		OD: 12.0-219mm
WT: 0.5-14mm


ASTM A790、ASME SA790


OD: 10.0-273mm
WT: 0.5-20mm


ASME SB163、ASTM B163


N08825,N08904,
N08028,N08800		OD: 16-273mm
WT: 1.65-20mm

ASME SB423、ASTM B423

ASME SB407、ASTM B407


ASME SB668、ASTM B668