Shandong Duohe Import And Export Co., Ltd.
Quality is life,customer-centric,staff is fundamental,innovation is power,integrity is our principle.
Add to Cart
Is seamless pipe more expensive than welded?
Usually the seamless steel pipe cost is higher than welded steel pipes, because the raw material, manufacturing
equipment and processes. But sometimes by the market pressure, welded pipe is more expensive, so if you met
this situation, don't hesitate to purchase the seamless steel pipe for the same dimensions.
What is AISI ASTM A554?
ASTM A554 Square Tube is part of the A554 specification. This specification covers pipes that require mechanical
properties, corrosion resistance and appearance characteristics. The specification can have any material grade made tubes.
look the same. However, the chemical composition of 316, which is made up of 16% chromium,10% nickel, and 2%
molybdenum, is the main difference between 304 and 316 stainless steel.
| Name | 304 316 Stainless Steel Round Square Pipe Welded Pipe Seamless Pipe Tube with Polished | |||||
| Standard | ASTM A554,ASTM A312 | |||||
| Material Grade | 201,202,304,316,316L,430 | |||||
| Size Range | 139mm-1600mm ETC. | |||||
| Thickness | 0.5-30mm | |||||
| Length | 6m or as customers' request | |||||
| Tolerance | a) Outer Diameter: +/- 0.2mm | |||||
| b) Thickness: +/- 0.02mm | ||||||
| c) Length: +/- 5mm | ||||||
| Surface | 180G, 320G Satin/Hairline 400G, 600G Mirror finish | |||||
| Application | handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc | |||||
| Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | |||||
| Chemical Composition of Material | Material Composition | 201 | 202 | 304 | 316L | 430 |
| C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.035 | ≤0.12 | |
| Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | |
| Mn | 5.5-7.5 | 7.5-10 | ≤2.00 | ≤2.00 | ≤1.00 | |
| P | ≤0.06 | ≤0.06 | ≤0.045 | ≤0.045 | ≤0.040 | |
| S | ≤0.03 | ≤0.03 | ≤0.030 | ≤0.030 | ≤0.030 | |
| Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 | |
| Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | 10-14 | | |
| Mo | | | | 2.0-3.0 | | |
| Mechanical Property | Material Item | 201 | 202 | 304 | 316 | |
| Tensile Strength | ≥535 | ≥520 | ≥520 | ≥520 | ||
| Yield Strength | ≥245 | ≥205 | ≥205 | ≥205 | ||
| Extension | ≥30% | ≥30% | ≥35% | ≥35% | ||
| Hardness (HV) | <105 | <100 | <90 | <90 | ||
Product display
Application
Shipping:
FAQ