Welcome to Zhishang Steel Co., Ltd.

prev next
  • stainless steel seamless pipe
  • stainless steel seamless pipe
  • stainless steel seamless pipe

Prime Quality 201 304 304L 316 316L 2205 2507 310S Stainless Steel Seamless Welded Pipe Tube

Stainless steel seamless pipe is a kind of hollow section, no joints around the strip of steel. The thicker the wall thickness of the product, the more economical and practical it is, the thinner the wall thickness, its processing costs will rise substantially.

Inquiry WhatsApp Email
Tel +86-531-88752665


Stainless steel seamless pipe is a kind of hollow section, no joints around the strip of steel. The thicker the wall thickness of the product, the more economical and practical it is, the thinner the wall thickness, its processing costs will rise substantially.

The process of the product determines its limited performance. Generally, the precision of seamless steel pipe is low: uneven wall thickness, low internal surface brightness, high measuring cost, and the internal surface and pitting and black spots are not easy to remove; Its detection and shaping must be handled offline. Therefore, it embodies its superiority in high pressure, high strength and mechanical structure materials

〣Manufacturing method

According to different production methods can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe, extrusion pipe, etc.

1.1. Hot rolled seamless stainless steel pipes are generally produced on automatic tube rolling units. The solid tube billet is inspected and cleared of surface defects, cut into the required length, centered on the perforated end face of the tube billet, and then sent to the heating furnace for heating, and perforated on the perforating machine. In the perforation at the same time constantly rotating and advancing, under the action of the roll and the head, the blank tube gradually formed inside the cavity, called the capillary tube. It is then sent to the automatic pipe mill for further rolling. Finally, the wall thickness of the whole machine is adjusted, and the sizing machine is calibrated to meet the specification requirements. It is an advanced method to produce hot rolled seamless steel pipe with continuous tube rolling unit.

1.2. If you want to obtain smaller size and better quality seamless pipes, you must use cold rolling, cold drawing or a combination of both methods. Cold rolling is usually carried out on a two-high mill, in which steel pipe is rolled in an annular pass consisting of a circular groove of variable section and a stationary conical head. Cold drawing is usually carried out in 0.5 ~ 100T single chain or double chain cold drawing machine.

1.3. The extrusion method is to place the heated billet in the closed extrusion cylinder, and the perforating rod and the extrusion rod move together, so that the extrusion part is extruded from the smaller die hole. This method can produce small diameter steel pipe.

This kind of steel pipe can be divided into stainless steel seamless steel pipe and stainless steel welded steel pipe (welded pipe) two categories, according to the manufacturing process can be different

For: hot rolling, extrusion, cold drawing and cold rolling these basic types, according to the section shape can be divided into round pipe and shaped pipe, widely used is the circular steel pipe, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle, octagonal shaped stainless steel pipe.

For the steel pipe under fluid pressure to carry out hydraulic test to check its pressure capacity and quality, under the specified pressure does not leak, wet or expansion to qualify, some steel pipe also according to the standard or demander requirements for flange test, flaring test, flattening test.

Seamless stainless steel pipe, also known as stainless steel seamless pipe, is made of steel ingot or solid tube billet perforated into wool tube, and then made of hot rolling, cold rolling or cold dialing. The specification of seamless steel pipe is expressed by the outer diameter * the thickness of the wall in millimeters



Product Name

Stainless steel welded pipe



Steel Grade

200 Series: 201,202
300 Series: 301,304,304L,316,316L,316Ti,317L,321,309s,310s
400 Series: 409L,410,410s,420j1,420j2,430,444,441,436
Duplex Steel: 904L,2205,2507,2101,2520,2304

Outer Diameter

6-2500mm(as required)


0.3mm-150mm (as required)


2000mm/2500mm/3000mm/6000mm/12000mm(as required)




No.1 2B BA 6K 8K Mirror No.4 HL



Price Terms


〣Factory Show



Q1:Can we visit your factory ? 

A: Warmly welcome once we have your schedule we will pick you up . 

Q2:What do your factory do regarding quality control? 

A: We have gained ISO, CE,API authentication. From material to products, each product has to go through 4-5 processes. Inspection,ccompanied by corresponding quality inspec 

Q3: How do you make our business long-term and good relationship ? 

A: 1.We keep good quality and competitive price to ensure our customers' benefit. 

2.We respect every customer as our friend and wesincerrly do business and make friends with them, no matter where they come from. 

Q4: Are you factory? 

A:  Yes, our factory has been producing and selling stainless steel products for many years. We have experience in many areas 

Q5:Are you support OEM? 

A: Yes, customer could send us their detail needing request. We will do the goods as customer request. 

Q6:Are the products be tested before shipping?

 A:  Yes, we test every batch goods before shipping to make sure all the goods qualified. 

Q7:Will you delivery the goods on time? 

A: Yes,we promise to provide best quality products and delivery on time .Honesty is our company's tenet. 

Q8:Do you accept the third party inspection? 

A: Yes absolutely we accept.

Online Message

Voice mail order
    Hit Refresh

Zhishang Steel Co., Ltd

ABOUT USOverviewThe company mainly deals in color-coated, galvanized, stainless steel pipes, stainless steel coils, stainless steel plates of various materials; hot-rolled series of rebar, medium and heavy plates, coils, I-beams, angle steels, channel steels, H-beams and other steel products and deep processing Service. (The company’s annual invent···

Hot Line+86-531-88752665