What is STK400 equivalent to?
stk400 steel tube,stk400 seamless pipe
Former steel grade STK41 steel pipe is completely equal to STK400 steel pipe. The equivalent grades ASTM A53 steel pipe,ASTM A106 GrB steel pipe,API 5L GRB steel pipe.
STK400 steel pipe is a type of carbon structural steel pipe. Its material grade is STK400, which belongs to the Japanese Standard (JIS) steel pipe material.
STK400 seamless carbon steel pipe is commonly used in load-bearing structures of buildings, bridges, highways and other structures because of its good weldability, cold formability and excellent strength and hardness. In addition, it resists corrosion and oxidation and has a long service life.
Chemical composition of STK400 galvanized steel pipe
| element | Content range (mass percentage) |
|---|---|
| (C) | 0.16% - 0.28% |
| (Si) | 0.10% - 0.40% |
| (Mn) | 0.50% - 1.00% |
| (P) | ≤0.045% |
| (S) | ≤0.050% |
Mechanical properties of STK400 carbon steel pipe
| Tensile strength (σb, MPa) | 400 - 510 |
| Yield strength (σ0.2, MPa) | 270 - 430 |
| Elongation (δ5, %) | ≥22 |
| Impact toughness (αkv, J) | ≥39 (-20°C) |
| Hardness (HB) | ≤170 |
Mild Steel Pipe Galvanized
Main Features: 1. Standard : JIS G3444
2.Materials: STK400, STK490
3.OD:21.7mm-609.6mm WT:2-22mm
4.length:5.8m,6m,11.8m,12m or random length
Why choose us
(1): Prime quality and reasonable price.
(2): Wide excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Trial order can be done in one week.
Gnee Company Team
FAQ
1.Q.Why choose Gnee?
A.With us, you will get the most competitive price, guaranteed quality, guaranteed delivery and after-sales service.
2.Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.
3.Q: Can I get some samples?
A: We are glad to provide free samples to you, but we do not offer the freight.
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