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86-21-68415567

info@topsteelpipe.com

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SHANGHAI TOP STEEL CO., LTD.
Phone: 86-21-68415567
Phone: 86-21-68415587
E-mail: info@topsteelpipe.com
Fax: 86-21-68415587-8002

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sidste nyheder

What are the factors related to t...
What are the factors related to the tightness of the inner coating and the tube? The type of heating equipment, heating method, fuel type, heating temperature, fineness of plastic powder; additive composition, etc. will all have a certain impact, but the key is still the exter...
How to polish stainless Steel Pipe?
How to polish stainless Steel Pipe? 1.Grind down any welds that are still on the pipe. Use a grinding disc and grinder for this task. 2.Mount the pipe into a pipe vise or similar set-up. If you don’t have a professional pipe vise, you can use a regular vise wrapped with ...
What is difference between butt w...
Butt welding flange is that the diameter and wall thickness of the interface end are the same as the pipe to be welded, just like the two pipes. The flat welding flange is a recess that is slightly larger than the outer diameter of the pipe at the interface, and the pipe is in...
Comparison of galvanized spiral s...
1.Welding process From the welding process, the welding method of galvanized spiral welded pipe and galvanized straight seam steel pipe are the same, but the straight seam welded pipe inevitably has many T-shaped welds, so the occurrence of welding defects is also greatly impr...
How to prevent the spiral steel p...
1.Spiral steel pipes of fixed length may not be bundled. 2.If the two ends of the spiral steel pipe are threaded, they should be protected by thread protectors. Apply lubricating oil or rust inhibitor to the screw. The openings at both ends of the spiral steel pipe can be equi...

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