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Chemical Industrial Stainless Steel Seamless Welded Pipe Standard ASTM A312 / 312M
Specifications:
A312 ASTM
For the United States of America materials and test association of austenitic stainless steel seamless steel pipe welded steel pipe
ASTM A312
Austenitic stainless steel seamless steel pipe welding pipe of the coefficient is as follows:
| Item Standard | ASTM A312/A312M | |
| Grade | TP304 | TP304L |
| TP316 | TP316L | |
| TP317 | TP317L | |
| TP347 | TP310H | |
|
| TP321H | |
| Yield Strength σ0.2(Mpa)
| ≥170; ≥205 | |
| Tensile Strength σ0.2(Mpa) | ≥485; ≥515 | |
| Elongation σ5(%)
| ≥35 | |
| Flattening test (mm) | H=1.09t/(0.09+t/D)And Test Readiness | |
|
OD Tolerance (mm) | OD | Tolerance |
| 10.3-48.3 | +0.40/-0.80 | |
| >48.3-114.3 | +0.80/-0.08 | |
| >114.3-219.1 | +1.60/-0.80 | |
| >219.1-457.2 | +2.40/-0.80 | |
| >457.2-660.4 | +3.20/-0.80 | |
| >660.4-864 | +4.00/-0.08 |
Description:
United States pressure pipe commonly used materials
Pipe under A312 standard also need to do Hydrostic test, annealing.
thickness tolerance: +-12.5%
others HRB<90
Generally speaking, the diameter of the pipe can be divided into outer diameter, inner diameter, nominal diameter.
The outer diameter of the tube for the seamless steel tube D To express,
Subsequently the size and wall thickness of the outer diameter,
For example
Size 108 Seamless steel pipe, wall thickness 5MM
Use. D108*5 Express
Applications:
Used in industries as chemical engineering, petroleum, medicine, food, energy, nuclear power, aerospace,
environmental protection, boiler, gas, war industry, machinery, ship building and so on.
Competitive Advantage:
Our factory is near to raw material market and high-speed way, the producing cost is low.
Our factory
