• Model NO.：Blind Flange
• Manufacturing Way：Forging
• Shape：Circle
• Product Name：Blind Flange
• Type of Face：RF
• Pressure Class：150 Lbs
• Size：4inch
• Transport Package：in Wooden Cases or Customers Requirements
• Specification：TUV, ISO9001, BV, TS, CCS
• Trademark：Derbo
• Origin：Sichuan China (Mainland)
• HS Code：7307210000
• Production Capacity：100000 Piece,Pieces Per Week

Steel FlangesMaterialCarbon steel ASTM A105. ASTM A350 LF1. LF2, 
CL1/CL2, A234, S235JRG2, P245GH P250GH, P280GHM 16MN, 20MN ,20# Stainless steel ASTM A182, F304/304L, F316/316LAlloy steelASTM A182 A182 F12,F11,F22,F5,F9,
F91etc.Standard                           ANSIClass 150 Flanges-Class 2500 FlangesDIN6Bar 10Bar 16Bar 25Bar 40BarJIS5K Flanges-20K FlangesUNI6Bar 10Bar 16Bar 25Bar 40BarEN6Bar 10Bar 16Bar 25Bar 40BarTYPE1.Welding neck Flange    2.Slip on3.Blind flange                   4.Long welding neck flange   5.Lap joint flange             6.Socket welding7.Threaded flange           8.Flat flangeSurfaceAnti-rust oil, clear lacquer, Black lacquer, Yellow lacquer,hot-dipped Galvanized
,electrical galvanizedConnectionWelding, ThreadedTechnicalForged, CastingSizeDN10-DN3600Package1.>Standard export packaging (Plywood Case Of Outside,Plastic Cloth 
Of Inside). 2:As Customers' Requirements                         Heat TreatmentNormalizing, Annealing, Quenching+TemperingCertificateTUV,ISO9001:2008;PED97/23/EC,ISO14001:2004,OHSAS18001:2007ApplicationsWater works, Shipbuilding industry, Petrochemical & Gas industry, Power
 industry, Valve industry,and general pipes connecting projects etc.
ASTM A182 Pipe Flange Technical ParametersChemical Composition and Mechanical Property For ASTM A182Steel GradeChemcial CompositionMechanical performanceC(Max)Si(Max)Mn(Max)P(Max)S(Max)NiCrMoTensile strenght
(Min)Yield Strenght
(Min)psiMpapsiMpaF3040.081.002.000.0450.038.0-11.018.0-20.0 5157520530F304L0.031.002.000.0450.038.0-13.018.0-20.0 4957017525F3160.081.002.000.0450.0310.0-14.016.0-18.02.00-3.005157520530F316L0.031.002.000.0450.0310.0-15.016.0-18.02.00-3.004957017525F317L0.031.002.000.0450.0311.0-15.018.0-20.03.0-4.04957017525


Quality Control
Our quality control department consists of experienced technicians. These personal strictly control the whole production procedure, from introduction of raw materials to finish products. They ensure high quality products for our customers.

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