Custormized Size and Type
SHANQI
Product Description
Seamless square tube is a kind of long strip steel with hollow section and no seam around it. It is a square tube formed by extrusion of seamless tube through four sides of die. Square tube has hollow section and is widely used as a pipe for conveying fluid. It is mainly used in liquid transportation, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler pipe, heat exchange pipe, gas, oil and other industries. It is stronger than welding and will not crack.
Grade | Level | Chemical composition,% | Deoxygenation method | ||||
C | Mn | Si | S | P | |||
No greater than | |||||||
Q195 | - | 0.06~0.12 | 0.25~0.50 | 0.30 | 0.050 | 0.045 | F、b、Z |
Q215 | A | 0.09~0.15 | 0.25~0.55 | 0.30 | 0.050 | 0.045 | F、b、Z |
B | 0.045 | ||||||
Q235 | A | 0.14~0. 22 | 0.30~0.65 | 0.30 | 0.050 | 0.045 | F、b、Z |
B | 0.12~0.20 | 0.30~0.70 | 0.045 | ||||
C | ≤ 0.18 | 0.35~0.80 | 0.040 | 0.040 | Z | ||
D | ≤ 0.17 | 0.035 | 0.035 | TZ | |||
Q255 | A | 0.18~0.28 | 0.40~0.70 | 0.30 | 0.050 | 0.045 | F、b、Z |
B | 0.045 | ||||||
Q275 | - | 0.28~0.38 | 0.50~0.80 | 0.35 | 0.050 | 0.045 | b、Z |
Product Pictures
Manufacturing Processes
Application
Urban / civil building pipeline
Machine structure pipe
Agricultural equipment pipeline
Water gas pipeline
Greenhouse pipe
Scaffold pipe
Building material
Furniture pipe
Low pressure fluid pipe
Vehicle manufacturing
Mechanical parts
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