PIPE-2-S10-A790 - PIPE 2" SCH 10S Seamless Tube ASME B 36.19 A 790 A355 P91

PIPE-2-S10-A790 - PIPE 2", SCH 10S, SEAMLESS, BE, ASME B 36.19 A 790 A355 P91

What is a Seamless Pipe?

Stainless steel seamless steel pipe is a long strip of steel with hollow section and no joints around it. Stainless steel seamless pipe

Features of stainless steel seamless pipe:

First, the thicker the wall thickness of the product is, the more economical and practical it is. The thinner the wall thickness is, the higher the processing cost will be; Secondly, the process of the product determines its limited performance. Generally, the accuracy of seamless steel pipe is low: uneven wall thickness, low brightness on the inner and outer surface of the pipe, high sizing cost, and there are pockmarks and black spots on the inner and outer surface, which are not easy to remove; Third, its detection and shaping must be processed offline. Therefore, it embodies its advantages in high pressure, high strength and mechanical structure materials

eamless pipes are derived from solid steel that is in sheet or bar form and is formed into                     

Specification and appearance quality of stainless steel pipe:

A. According to the provisions of gb14975-94 stainless steel seamless steel pipe, the length of steel pipe is usually 1.5 ~ 10m for hot-rolled steel pipe and 1m or more for hot extruded steel pipe. 1.0 ~ 7m for cold drawn (rolled) steel pipe with wall thickness of 0.5 ~ 1.0mm; If the wall thickness is greater than 1.0mm, 1.5 ~ 8m.

B. There are 45 kinds of hot rolled (hot extruded) steel pipes with a diameter of 54 ~ 480mm; There are 36 kinds with wall thickness of 4.5 ~ 45mm. There are 65 kinds of cold drawn (rolled) steel pipes with a diameter of 6 ~ 200mm; There are 39 kinds with wall thickness of 0.5 ~ 21mm.

Material characteristics

A335 P91, steel model. It has high oxidation resistance and high temperature steam corrosion resistance

characteristic:

It not only has high oxidation resistance and high temperature steam corrosion resistance, but also has good impact toughness, high and stable durable plasticity and thermal strength. When the service temperature is lower than 620 ℃, the allowable stress is higher than that of austenitic stainless steel. Above 550 ℃, the recommended design allowable stress is about twice that of T9 and 2.25Cr-1Mo steel.

application

It can be used as steel pipe for high-temperature superheater and reheater of subcritical and supercritical boilers with wall temperature ≤ 625 ℃, as well as high-temperature header and steam pipe with wall temperature ≤ 600 ℃, as well as nuclear electric heat exchanger and furnace pipe of petroleum cracking unit.

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