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*GB 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis * GB/T 223.5-1997 Methods for chemical analysis of iron,steel and alloy The reduced molybdosilicate spectrophotometric method for the determination of acid-soluble silicon content *-*-* GB/T 223.14-1989 * GB/T 223.16-1991
Pipeline API SPEC 5LISO 3183, GB/T 9711 Hebei PIPELINE. Standard API SPEC 5LISO 3183, GB/T 9711. Application It is used for conveying gas, water and petroleum for oil and Gas industries.
SHENGTIAN GROUP HEBEI SENHAI PIPELINE CO., LTD. GB/T 9711.2-2011 Spiral Steel Pipe for Oil and Natural Gas Transportation SY/T 5037-2000 Spiral Steel Pipe for Common Fluid Transportation SY/T 5040-2000 Spiral Submerged Arc Welding Pipe for Piling
The annual yield of SSAW pipe with outside diameter 219mm-3620mm, wall thickness 5-25.4mm and steel grade B-X80 is 1,000,000 tons. its two steel pipe production lines, one for spiral submerged arc welded (SAW) steel pipe and one for longitudinal submerged arc welded (SAW) steel pipe, are respectively comprised of two sets of main machines and 1
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