1.size: 1/2" to 24" W.T: 3mm-40mm (SCH 20 to SCH XXS)
    OD: 114.3mm to 1219.2mm
2. Material & standard: ASTM A 106/A53 GR.B APL 5L GR.B API 5L X42-X 70 DIN 2448
3.Surface: oil-coating,varnish, or end- protection by plastic caps to be confirmed
4.Packing: In hexagonal shape bundles wrapped with strong steel trip 2MT/bundle
5.Application: oil & gas,chemical.electri industry and ship construction,water transportation
6.Operation principle: superior quality,competitive price and best service