Is Work-Life Balance A Pipe Dream For Women In Business? Is Work-Life Balance A Pipe Dream For Women In Business? shenzhoutongsteel.com Product Spiral Steel Pipe Process Submerged Arc Weld Standard ASTM A53,ASTM A252,ASTM A139,ASTM A36,etc Material GR.A,GR.B O.D 8”--80”(219--2030mm) W.T 0.322”--1.602”(8.1--26.97mm) Length As per custo