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86-21-68415567-8005

info@topsteelpipe.com

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THƯỢNG HẢI TOP STEEL CO., LTD.
Điện thoại: 86-21-68415567-8005
Điện thoại: 86-21-68415567-8006
E-mail: info@topsteelpipe.com
Fax: 86-21-68415587-8002

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mới nhất Tin tức

How to identify thick-walled seam...
1. The shoddy thick-walled seamless steel pipe is prone to folding. Folding is a variety of fold lines formed on the surface of thick-walled seamless steel tubes, which often extend throughout the longitudinal direction of the product. The reason for the folding is that the in...
What types of oil casings are there?
What types of oil casings are there? Different types of casing used in oil extraction: Surface oil casing protects the well from contamination by shallow water and shallow gas, supports wellhead equipment and maintains the weight of the other layers of the casing. The technica...
What is the use of oil casings?
What is the use of oil casings? Oil casing is the lifeline for maintaining oil well operations. Due to different geological conditions, the state of the downhole is complicated, and the combined action of tension, compression, bending and torsion stress acts on the pipe body, ...
The difference between stainless ...
The difference between the so-called stainless steel seamless steel pipe and the carbon steel seamless steel pipe mainly refers to the difference in design rules between stainless steel and carbon steel, that is to say, the design rules of the two steels are not universal. The...
Seamless steel tube preservation ...
The seamless steel tube is a long strip of steel with a hollow section and no seams around it. Everyone can understand how to keep the seamless steel pipe, we will introduce some invalid methods. Choose the right venue and storeroom: 1. The site or warehouse where the steel is...

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