... by plastic cloth according to the size of the pipe with steel belt tied 3 according to the customers ... X42, L45StandardGB/T9711.1Length5m-12mUsageline pipe, casing and tubing, fluid pipe, water delivery, heating pipe, power pipe, structure pipe, scaffold, piling pipeManufacture processesRaw material ... by plastic cloth according to the size of the pipe with steel belt tied;3.according to the customers' ...