Does 304 stainless steel pipe have a specific product classification? 

Stainless steel pipe is a kind of material widely used in various industrial fields, which has the characteristics of corrosion resistance, high temperature resistance and high strength. In the stainless steel pipe market, according to different uses and specifications, it can be divided into a variety of different types.

First of all, according to the wall thickness to divide, stainless steel pipe can be divided into thin wall pipe and thick wall pipe. Thin-walled tubes are usually used in occasions where smaller pressure or fluid flow is required, such as building decoration, mechanical parts, and so on. The thick wall pipe is suitable for engineering fields under greater pressure or with greater fluid flow, such as petroleum, chemical industry, shipbuilding and so on.

Secondly, according to the different production process, stainless steel pipes can be divided into seamless pipes and welded pipes. Seamless pipe is processed by cold drawing or hot rolling process, with high precision and surface quality. Welded pipe is made by rolling steel plate or strip into a tube, which is suitable for mass production and low cost requirements.

In addition, there are some special types of stainless steel pipes, such as ultra-low carbon 304 stainless steel pipes, nickel-based alloy steel pipes and so on. These special types of stainless steel tubes have higher strength, corrosion resistance and wear resistance, and are suitable for some areas with special requirements, such as the nuclear industry, aerospace and so on.

In summary, 304 stainless steel pipes can be classified according to factors such as wall thickness, production process and special needs to meet the needs of different industries and applications.

No. 35 steel is widely used in the manufacture of various forgings and hot presses, cold drawn and top forged steel, seamless steel pipes, parts in mechanical manufacturing, such as crankshafts, shafts, pins, levers, connecting rods, beams, sleeves, wheels, washers, screws, nuts, motorcycle frames, etc.

Grades and standards

Chinese brand: 35# Standard: GB/T 699-2015

American grade: ASTM1035 Standard: ASTM A29A29M-04

Japanese brand: S35C Standard: JIS G3507
-2005

The popularization and application of high-precision cold-drawn precision steel pipe is to save steel, improve processing efficiency and save energy. The so-called high-precision cold-drawn seamless steel pipe refers to the strict inner and outer diameter dimensional accuracy (tolerance range), and the internal and external surface finish, roundness and straightness are good, which can greatly save machining hours, improve the utilization rate of materials, and help to improve product quality.

High precision cold-drawn steel pipe is a new type of steel pipe, its main characteristic is high precision. Usually there are two production processes of two-high rolling mill and three-high rolling mill. The precision of cold-rolled seamless steel pipe produced by three-high rolling mill is higher, which can be controlled within a few wires, but the price is relatively higher.