Anti-Corrosion Specifications and Standard Dimensions of Steel Pipes for Construction Piping
Japan Water Steel Pipe Association (WSP) Material excerpt

Classification Pipe type (standard)  Code Anti-corrosion specifications Standard dimensions Joint Inner surface Outer surface 4m 5.5m Firefighting Drainage Air conditioning Industrial water Sewage, etc. Galvanized steel pipe for water piping （JIS G 3442） SGPW Zinc plating Zinc plating 15〜100A 125〜300A Screw joint Welded joint Housing joint Joint with flange MD joint Carbon steel pipe for piping （JIS G 3452） SGP White pipe Zinc plating Zinc plating 15〜100A 125〜500A Black pipe − − − 15〜500A Carbon steel pipe for pressure piping （JIS G 3454） STPG White pipe Zinc plating Zinc plating − 15〜500A Black pipe − − − 15〜500A Grooving corrosion-resistant electric resistant welded steel pipe (applicable to the above three pipe types) Refer to the above three pipe types (SGPW, SGP, STPG). − 125A or more (STPG is 15〜500A) Water supply Cooling water Rigid polyvinyl chloride lined steel pipe for water supply (JWWA K 116) VA Rigid polyvinyl chloride Primary anti- corrosion coating 15〜150A − Pipe end anti-corrosive joint (For VD and PD, outer surface is coated) VB Zinc plating VD Rigid polyvinyl chloride Polyethylene powder-lined steel pipes for water supply (JWWA K 132) PA Polyethylene Primary anti- corrosion coating 15〜100A − PB Zinc plating PD Polyethylene Hot water supply Cold and hot water Heat resistant rigid polyvinyl chloride lined steel pipe for water supply （JWWA K 140） HVA Heat resistance rigid polyvinyl chloride Primary anti- corrosion coating 15〜100A − Heat resistant pipe end anti-corrosive joint Firefighting Rigid polyvinyl chloride coated steel pipe for firefighting（ WSP 041） VS Zinc plating Rigid polyvinyl chloride 15〜150A − Coated joint (Inner zinc plating) Drainage Non-tar-based epoxy resin painted steel pipe for drainage（ WSP 032） NTA Non-tar-based epoxy resin Primary anti-corrosion coating − 32〜350A MD joint Drainage joint Flexible joint for pressure feed drainage steel pipe Rigid polyvinyl chloride lined steel pipe for drainage（ WSP 042） D-VA Rigid polyvinyl chloride Primary anti-corrosion coating − 40〜200A MD joint Specifications of Steel Pipes for Construction Piping by Manufacturer   Japan Water Steel Pipe Association (WSP) Material excerpt Classification Pipe type (standard) Code JFE Steel NIPPON STEEL*1 (formerly NIPPON STEEL & SUMITOMO METAL CORPORATION) SEKISUI CHEMICAL KYOSEI Others Firefighting Drainage Air conditioning Industrial water Sewage, etc. Galvanized steel pipe for water piping（ JIS G 3442） SGPW ○ ○ ― ― ― Carbon steel pipe for piping（ JIS G 3452） SGP ○ ○ ― ― ― Carbon steel pipe for pressure piping（ JIS G 3454） STPG ○ ○ ― ― ― Grooving corrosion-resistant electric resistant welded steel pipe (applicable to the above three pipe types) MN MIZONON SUPER SEAM ― ― ― Water supply Cooling water Rigid polyvinyl chloride lined steel pipe for water supply （JWWA K 116） VA、VB JLP VLP ESLON LP KEYLON LP ― VD JLP-VD VLP-VD ― KEYLON LP-VD ― Polyethylene powder-lined steel pipes for water supply （JWWA K 132） PA、PB PFP FLP ― ― ― PD PFP-PD FLP-PD ― ― ― Hot water supply Cold and hot water Heat resistant rigid polyvinyl chloride lined steel pipe for water supply（ JWWA K 140） HVA ― ― ESLON HTLP ― ― Firefighting Rigid polyvinyl chloride coated steel pipe for firefighting （WSP 041） VS Firefighting pipe VS ― ― KEYLON VF ― Drainage Non-tar-based epoxy resin painted steel pipe for drainage （WSP 032） NTA ― ELP-NTA ― ― ― Rigid polyvinyl chloride lined steel pipe for drainage （WSP 042） D-VA JDLP ― ESLON DVLP KEYLON DL ― *1 The marking on the pipe is for NIPPON STEEL.

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