Products made of 20G steel normally need to be heat treated (normalized or tempered); before use, the manufactured parts and components need to be tempered or chemically treated (carburized, nitrided, etc.), surface hardening or high frequency hardening.

20G high pressure boiler tubes belong to alloy structural steel. 20G steel is rolled (forged) into round, square, flat sections and seamless steel tubes. It is mostly used to make secondary and larger parts, mechanical parts, high-pressure pipelines and containers in mechanical products.

20G high pressure boiler tubes are widely used in hydraulic props, high-pressure gas cylinders, high-pressure boilers, fertilizer equipment, petroleum cracking, automotive axle sleeves, diesel engines, hydraulic fittings. Alloy structural steel is based on high-quality carbon structural steel, and one or more alloy elements are appropriately added to immprove the mechanical properties, ductility and hardenability of the steel.