T/CISA 311-2023 Wave-enhanced spiral welded steel pipe
T/CISA 311-2023 Wave-enhanced spiral welded steel pipe
Basic Information
Scope
Scope: This document specifies the order content, dimensions, appearance, weight, and allowable deviations of corrugated reinforced spiral welded steel pipes, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This document applies to corrugated reinforced spiral welded steel pipes used in building water supply and drainage, municipal water supply and drainage, water conservancy projects, and heat pipe networks (hereinafter referred to as "steel pipes"). Main technical contents: This document specifies the order content, dimensions, appearance, weight, and allowable deviations of corrugated reinforced spiral welded steel pipes, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. It stipulates the structural types and dimensions of steel pipes, with corrugation types including V-type, U-type, and double U-type; the nominal outer diameters range from 219mm to 1620mm, and the number of corrugation strips varies from not less than 2 to not less than 8 according to the size of the outer diameter. The steel grades include Q195, Q235B, L245, L290, L360, and L415, etc. The inspection items of steel pipes include weld tensile and hydraulic testing, etc.