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seamless steel pipe
Seamless steel pipe:
Quality Standard:
ASTM A106, ASTM A179, ASTM A192, ASTM...
ERW steel pipe
ERW, LSAW,DSAW
Quality Standard: IS:3589, IS:1978-1982,BS:1387,ASTMA53, DIN2458,...
Spiral Pipe
SAW, SSAW
Quality Standard: IS : 1978, ASTM A252
Size:...
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