... :ISO 9001, SGS, BV, etc. Steel Pipe for Boiler with JIS Standard1.Specification Type Seamless PipePipe Size1/2 ... ,smelting, aviation, power, foodstuff, papermaking, chemical, medical equipment, boiler heat, exchanger, gas metallurgy, Surface Black painting, varnish,FBE, ... .2. Production3. Testing4. Marking5. Packing and transportationwoven bag as per customers request6. CompanyHebei Honry Steel Pipe Co ...