常用镀锌钢管规格表公称口径外径壁厚镀锌管壁黑铁管增长旳重量系数MMM ＭＭ M一般钢管加厚钢管61 ０.021.０ 64 1．059８13．52.７ 51.0561.0 ４ 61 ０1 ７．0３.501.0561．046152 １．３ 3.151.047１.０３920２６．８３.401．０４61．0392 ５３３....

时间:2025-05-20 08:28栏目:行业资料

常用镀锌钢管规格表公称口径外径壁厚镀锌管壁黑铁管增加的重量系数MMMMMM普通钢管加厚钢管610。021。0641。059813。52。751。0561.0461017.03.501。0561。0461521.33.151.0471.0392026。83。401。0461.0392533。54.251.0391。0323242.35.151.0391。0324048。04.001...

时间:2025-04-10 20:45栏目:行业资料

常用镀锌钢管规格表公称口径外径壁厚镀锌管壁黑铁管增加的重量系数MMMMMM普通钢管加厚钢管610.021.0641.059813.52.751.0561.0461017.03.501.0561.0461521.33.151.0471.0392026.83.401.0461.0392533.54.251.0391.0323242.35.151.0391.0324048.04.001.0361.0305060.05.001.0361.02865...

时间:2024-11-17 01:16栏目:行业资料