Standard: astm/jis/din/bs/en/gb Material: 10# 20# a3 q235a 20g 16mn astm a234 astm a105 astm a403, etc. Usage:water transport/boiler use/chemical use/construction use Size:1/2''-28'' Wall thickness:4mm-140mm Kind:seamless Packing:hexagonal shaper bundled with strong steel strips.Plastic caps on both of the pipes.Other types of packing can be made according to the customers requirements. Surface: black, red, blue, or according to customers requirements Trade terms:l/c or t/t Delivery time:10-100days, depending on qty. Productivity:6000 tons per year Others:special designs are available. The larger quantity, the lower price. Hexagonal shaper bundled with strong steel strips.Plastic caps on both of the pipes.Other types of packing can be made according to the customers requirements.