... .5, ASME B16.47A/B, DIN/UNI/BS/JISMaterialCarbon Steel, Stainless Steel, Alloy Steel Types of faceRF, FF, RJ, Tongue&Groove Facing, etc ... .Surface treatmentblack painting, anti-rust varnish, anti-rust oil,hot-galvanized ... paymentCertificateAPI, CCS,and ISO9001:2000Productivity10000 ton per monthKeywords top carbon steel flanges