The Welding Process---The welding of the spirally welded pipes is based on the Double-Sided Submerged Arc Welding (DSAW) process.The principle---Arc welding works by using electric current to produce an electric arc in a gas environment. The arc's heat brings the metal to fusion point. A key questio
The processing technology is different: seamless steel tubes are made of high-quality carbon steel or alloy steel. The processing divided into cold drawing and hot rolling, and the seamed pipe is generally made by welding.Different uses: Seamless steel pipes are mainly used as pipelines or structura
This problem about flat welding flanges has always been a topic of concern. It is related to the production costs or economic benefits of companies and enterprises. Therefore, the sealing principle of flat welding flanges is constantly improving and perfecting. However, the main design disadvantage
In general, apart from straight pipes, all accessories applied to a pipeline system are collectively known as pipe fittings. Nevertheless, we often refer to elbows, tees, reducers, caps and other varied joints as pipe fittings. At the same time, products like flanges, valves, expansion joints, pipin
Choose to buy stainless steel pipes 1. Identify whether the steel stamped material "304" is printed on the surface of the pipe, and obtain the stainless steel pipe manufacturer's quality certificate and quality assurance certificate.Choose to buy stainless steel tube 2. Test with acidic reagent, aft
1. Introduction of stainless steel pipe Stainless steel pipe is a hollow long round steel, which is widely used in petroleum, chemical, medical, food, light industry, machinery and instrumentation and other industrial pipelines and mechanical structural parts. Stainless steel pipe is a kind of ec
Stainless Type 304 is one of the most versatile and commonly used grades of stainless steel. It is a Chromium-Nickel austenitic alloy containing a minimum of 18% Chromium and 8% Nickel with a max of 0.08% Carbon. It cannot be hardened by heat treatment but cold working can produce higher tensile str
Welded pipes are divided into spiral welded pipes and longitudinally welded steel pipes according to the forming process, and high-frequency resistance welding and submerged arc welding according to the welding process. Spiral welded pipes all adopt submerged arc welding process. For longitudinally
In the production process of seamless pipe, there are cold hardening and hydrogen embrittlement phenomenon, they are caused by cold drawn seamless pipe cracking the main reason. In this paper, two phenomena were analyzed and some measures to prevent cracking of small caliber seamless steel tubes wer
