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Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

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Oil and gas pipeline

Oil and gas pipeline welding construction technology

Keywords :Oil and gas pipeline        Update : 2020-09-24        View(s) : 913

1.1 Manual welding with cellulose downward electrode When there is a pipeline with severe hydrogen sulfide corrosion or a pipeline operating in a cold environment, use a low-hydrogen type vertical downward welding electrode. Due to the flexibility of manual welding and the low requiremen...

stainless steel clad steel pipe

Welding technology of lining stainless steel clad steel pipe

Keywords :stainless steel clad steel pipe        Update : 2020-09-21        View(s) : 975

The lining stainless steel composite steel pipe (304+Q235B) is a new type of composite pipe, which has the characteristics of corrosion resistance, high-temperature resistance, high extensibility, and high strength. It is widely used in the process of pipelines of new and expanded petrochemica...

Flange classification

Flange classification

Keywords :Flange classification        Update : 2020-09-16        View(s) : 1035

1. According to national standards: integral flange, threaded flange , butt welding flange, flat welding flange with neck, socket welding flange with neck, butt welding ring loose flange with neck, plate flat welding flange, Buttweld ring plate loose flange, flat weld ring plate loose flange, f...

Pre-treatment and use of straight seam steel pipe

Pre-treatment and use of straight seam steel pipe

Keywords :Pre-treatment and use of straight seam steel pipe        Update : 2020-09-11        View(s) : 934

Non-destructive testing of the inside of the weld. Because the pipeline belongs to the extra-large steel pipe in the water supply project, especially the steel pipe with a thickness of t=30mm is used as a pipe bridge, which not only bears the internal water pressure but also bears the weight of ...

Process characteristics of spiral steel pipe

Process characteristics of spiral steel pipe

Keywords :spiral steel pipe        Update : 2020-09-09        View(s) : 603

1. During the forming process, the steel plate deforms evenly, the residual stress is small, and the surface does not produce scratches. The processed spiral steel pipe has greater flexibility in the size and specification range of diameter and wall thickness, especially in the production of h...

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