3.6 Bore test (hot-dip zinc coated tubes only) 3.7 Manufacturer's certificate Section four. Protection 4.1 General 4.2 Varnish 4.3 Hot-dip zinc coating 4.4 Threads Section five. Tubulars 5.1 General 5.2 Sockets 5.3 Pieces 5.4 Nipples 5.5 Longscrews 5.6 Bends and springs 5.7 Return bends 5.8 Protection Section six. Marking 6.1 Tubes and tubulars
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BS 7 85 Hot Dipped Galvanized Steel Pipe 1/2 Inch . China Hot Dipped Galvanized Steel Pipe Factory Derbo Supplies BS7 85 Hot Dipped Galvanized Steel Pipe, 1/2 Inch, SCH 30, Hot Rolled, Green House. BS 7 85 Hot Dipped Galvanized Steel Pipe 1/2 Inch SCH 30 Buy Bs1387 85 Hot dipped Pipes 28 85223949, Buy Bs1387 85 Hot dipped Pipes 157 5623 0789. where to buy galvanized pipe ZS Steel PipeBS7-1985 ASTM A53 hot-dip galvanizing steel pipe characteristics:1, Bright colour and well-proportioned galvanized layer both inside and outside. 2, Strict-straight inside welded seam. each pipe examined by flaw detection of whirling current. 3, Zinc no.0 used and strong corrosion resistance. 4, Long usage period for special treatment in
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