Large-diameter alloy seamless steel pipe uses

Large-diameter alloy seamless steel pipes are widely used across various industries due to their strength, durability, and ability to withstand high pressure and temperature. These pipes are manufactured to meet specific standards, ensuring their performance in demanding applications. Below are the key uses of large-diameter alloy seamless steel pipes according to different standards.

GB9948-1988 (Seamless Steel Pipe for Petroleum Cracking)
These pipes are primarily used in boilers, heat exchangers, and pipelines for transporting fluids in petroleum refineries. They are designed to handle high temperatures and pressures in the refining process. Common materials include 20, 12CrMo, 1Cr5Mo, and 1Cr19Ni11Nb.

GB18248-2000 (Seamless Steel Pipe for Gas Cylinders)
This standard applies to pipes used in the manufacturing of gas and hydraulic cylinders. The pipes are built to withstand high internal pressures, making them suitable for gas storage and hydraulic applications. Representative materials include 37Mn, 34Mn2V, and 35CrMo.

GB/T17396-1998 (Hot-Rolled Seamless Steel Pipe for Hydraulic Props)
These pipes are primarily used in hydraulic supports and columns in coal mines, as well as other hydraulic systems. They are designed for strength and resilience in demanding environments. Common materials include 20, 45, and 27SiMn.

GB3093-1986 (High-Pressure Seamless Steel Pipe for Diesel Engines)
These pipes are used in the high-pressure oil injection systems of diesel engines. The pipes, usually cold-drawn, need to handle high-pressure oil flow. The representative material is 20A.

GB/T3639-1983 (Cold-Drawn or Cold-Rolled Precision Seamless Steel Pipe)
This standard is for steel pipes used in mechanical structures and hydraulic systems that require high dimensional accuracy and a smooth surface finish. Typical materials include 20 and 45 steel.

GB/T3094-1986 (Cold-Drawn Seamless Steel Pipe and Special-Shaped Steel Pipe)
These pipes are primarily used for various structural parts and components, manufactured from high-quality carbon structural steel and low-alloy structural steel.

GB/T8713-1988 (Precision Inner Diameter Seamless Steel Pipe for Hydraulic and Pneumatic Cylinders)
This type of seamless steel pipe is used in hydraulic and pneumatic cylinders where precise inner diameter dimensions are critical. Common materials include 20 and 45 steel.

GB13296-1991 (Stainless Steel Seamless Steel Pipe for Boilers and Heat Exchangers)
These pipes are widely used in chemical enterprises, boilers, superheaters, heat exchangers, and condensers. The pipes are built to resist high temperatures, pressure, and corrosion. Representative materials include 0Cr18Ni9, 1Cr18Ni9Ti, and 0Cr18Ni12Mo2Ti.

Each of these standards reflects the specific requirements for different industrial applications, ensuring that the pipes meet the necessary performance criteria for high-temperature, high-pressure, or corrosive environments.