Commodity name: welded steel pipes Process method: Cold drawn/cold welded Material:Q195,Q235 Size: A) O. D.: Customized B) W. T.: Customized Length: Max. 12 meters we can supply pipes according to the specific requirement and usage of buyer.galvanized, black and brighten square/rectangular pipe are available. service of painting the pipe with varnish or oil,threading and socket the pipe and put on plastic cap are available.