G.I.PIPE SCHEDULE 80

G.I.PIPE SCHEDULE 80 1/2 G.I.pipe schedule 20 是意思? Pipe schedule PIPE 3 SCHEDULE 80X16是什么意思, G.I.pipe是什么钢管? .Schedule 80 Pipe size:3 sh 80 听说是80厚的意思,那口径都只有3“=75mm,这个壁厚80怎么可能啊? Pipe 在一份管件报价中,有pipe schedule底下对应是40或30,这指什么?等尺寸 外径 内径 pipe schedule2 2.38 2.067 40 有哪位大虾知道钢管行业中SCHEDULE 40 AND SCHEDULE 10 PIPE到底属于哪种规格啊?BLACK AND GALVANIZED SCHEDULE 40 A-53 GRADE A&B PE X 21'.BLACK AND GALVANIZED SCHEDULE 10 PIPE A-795 OR A-135 PE AND GROOVED END X 21',能不能帮我翻 8 SCH 80 PIPE 6Mtr.SS304 3sched 80 pipe是什么管? 英语翻译15.A liquid of density 70 lb/ft3 and viscosity 0.12 cp flows through a 4-in schedule 40 horizontal steel pipe of length 600m .the volumetric flow rate is 35 gal/min.what horsepower is needed for this purpose?16.A pump with 80% efficiency External to the pipe and remote from the pipe i.e.above ground.这句话怎么翻译啊,不懂唉~ 英语翻译A typical connection material from a downspout to a cistern is a 3- or 4-inch diameter schedule 40 PVC pipe or the more environmentally sensitive ABS pipe.For potable rainwater collection,only schedule 40 PVC should be used,as it is the o 关于英文的缩写I think the schedule`s been changed.schedule`s been changed是什么意思?难道是 schedule has been changed? pipe insert oxygen pipe 在vbs种 for each i in pipe 这段代码能给我讲解下吗,i和pipe分别代表什么