Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of Square & Rectangular Black Steel Pipe ASTM A500 Grade B/C, Structural & Construction Use in China. Welcome to consult the quotation and import cheap Square & Rectangular Black Steel Pipe ASTM A500 Grade B/C, Structural & Construction Use made in China here from our factory.
Tianjin Quality Square and Rectangular Black Steel Pipes
I.Product Basic Info:
| Name | Steel box |
| Surface | Black, oiled or as customers' requests |
| Material | Q195,Q215,Q235 |
| MOQ | 5 tons for normal size and material |
| WT | Usually above 0.5mm |
| Payment terms | TT deposit +balanced against BL copy or 100% LC at sight |
| Trade terms | FOB,C&F,CIF,EXW |
| Length | fixed or random,as customer request. |
| End Treatment | Plain(can be threaded,punch,shrink,extension... ) |
| Lead time |
within 7 days from stock with 6m length (stock pipe with our factory name in Chinese),20-25 days for customized pipe according to the qty |
2.Product Chemical Composition & Mechanical Properties :
| Grade | Chemical Composition | Mechanical Properties | ||||||
| C | Mn | Si | S | P | Yield | Tensile | Elongati | |
| Strength Mpa | Strenth Mpa | -on % | ||||||
| Q195 | 0.06-0.12 | 0.25-0.50 | ≤0.30 | ≤0.045 | ≤0.05 | ≥195 | 315-430 | ≥33 |
| Q235 | 0.12-0.20 | 0.30-0.67 | ≤0.30 | ≤0.045 | ≤0.04 | ≥235 | 375-500 | ≥26 |
| Q345 | ≤0.20 | 1.00-1.60 | ≤0.55 | ≤0.04 | ≤0.04 | ≥345 | 470-630 | ≥22 |
3.Product standard test:
| Q195≈ | Grade B,SS330 SPHC,S185 |
| Q235 ≈ | Grade D,SS400,S235 |
| Q345 ≈ | Grade 50/345,SPFC590,E/S335 |
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