Stainless steel small diameter steel pipe (GB/T3090-1982)

Introduction

Stainless steel small-diameter steel pipes (GB/T3090-1982) refer to welded stainless steel pipes of 6 meters in length or less, whose outer diameter is not more than 89mm. It is a type of steel pipe that is widely used in various industries.

Production Specification

The stainless steel small-diameter steel pipe is made of stainless steel containing around 8.5% chromium and 18% of nickel, and other alloying elements like tungsten, molybdenum, and aluminum. The size of the steel pipe is determined by the outer diameter of pipe, while the wall thickness of the Steel Pipe is determined by the pipe schedule. The finished product needs to tested and certified before delivery, to determine its integrity.

Application

Stainless steel small-diameter steel pipes are widely used for water service, local heating and ventilation, electrical communication, and related pipeline components in various industries. They are used in gas pipelines and houses, oil pipelines, electric power, chemical and other industries. Due to their specific function and application, stainless steel small-diameter steel pipes often need to use a special alloy steel and corrosion-resistant steel.

Features

Despite its much higher price than common steel, stainless steel small-diameter steel pipe has become highly popular in the market because of its unique features, such as corrosion resistance, heat resistance, non-magnetic and impact resistance. In addition, stainless steel products have a much longer lifespan than those made of common steel, which makes them economical and viable in the long run. The exterior surface of the stainless steel small- diameter steel pipe is typically bright, smooth and polished, making them an aesthetically pleasing option for many from architects to industrial owners.

Conclusion

Stainless steel small-diameter steel pipes are a type of steel pipes that are widely used for various applications, due to its unique features such as corrosion resistance, heat resistance, non-magnetic and impact resistance, and its much longer lifespan compared to common steel products. It has become a highly popular product in the market. It is made of stainless steel containing 8.5% chromium and 18% of nickel, and other alloying elements, delivery of which needs to be tested and certified.

Stainless steel small diameter pipe (GB/T3090-1982)

Stainless steel small diameter pipe is a kind of stainless steel pipe which has a small diameter and wall thickness. It is manufactured according to GB/T3090-1982 requirements and standards. The standard covers material classification, chemical composition, physical properties, mechanical properties, manufacturing method, inspection and testing methods and inspection rules.

The material of stainless steel small diameter pipe is an Austenitic stainless steel. Its chemical composition includes C, max 0.015; Mn, max 1.00; S, max 0.030; P, max 0.045; Si, max 1.000; Cr, 18.00 - 20.00; Ni, 8.00 - 11.00; Cu, max 0.75 and N, max 0.10.

The physical requirements of this kind of stainless steel small diameter pipe include temperature range from 1000 - 1600 degrees Celsius, coefficient of thermal expansion 13.7 x 10⁻⁶ and modulus of elasticity 188.5 GPa.

Its mechanical requirements include tensile strength 500/680 MPa, elongation 33.8/44.3%, yield point 220/310 MPa and hardness ≤217 HRC.

The manufacturing method should follow a PT100 standard and the inspection and testing method includes ultrasonic examination, hydrostatic testing, impact testing, physical inspection and chemical analysis.

Stainless steel small diameter pipe is widely used in various industries and has a strong corrosion resistance and heat resistance. The performance of this product is reliable and the quality is guaranteed.