Lap joint flange

Lap joint flange

China Lap Joint Flange Manufacturer Datang Offers Lap Joint Flange, LJ Flange used for Stub End Fittings, Available in ANSI, BS, JIS, UNI, MSS SP.

  • Min.Order Quantity: 1 Piece
  • Supply Ability: 2000 Tons / Month
  • Port: Tianjin port
  • Delivery Detail: 15-20 days
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Product Details

Lap Joint Flanges (LJ Flanges) are used on piping fitted with lapped pipe or with lap joint stub ends the combined initial cost of the two items being approximately one-third higher than that of comparable welding neck flanges. Their pressure-holding ability is little, if any, better than that of slip-on flanges and the fatigue life of the assembly is only one-tenth that of welding neck flanges. The lap joint flange with the stub end assembly are normally used in systems requiring frequent dismantling for inspection and cleaning and where the ability to swivel flanges and to align bolt holes materially eases the erection of large diameter or unusually stiff piping. These flanges are also used in applications where there is a need to facilitate bolt alignment. Their use at points where severe bending stress occurs should be avoided.

Lap Joint Flange Description

Type flange
Material Alloy steel (ASTM A234 WP12/WP11/WP22/WP5/WP9/WP91)< /br>
Stainless steel (ASTM A403 WP304/WP304L/WP316/WP316L)< /br>
Carbon steel (ASTM A234WPS, A234WPC, A420 WPL6), St45.8 A105 A106 STG42)
Standard ANSI, B16.9, ASME, DIN2650, 2615, 2616, 2617, JIS B2311, 2312, 2313, EN 10253-11, EN10253-2
Type LR 30, 45, 60, 90, 180 degree< /br>
SR 30, 45, 60, 90, 180 degree< /br>
1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D
Thickness SCH5 , SCH10, SCH20, SCH30, SCH STD ,SCH40, SCH60, SCH XS ,SCH80, SCH100, SCH120, SCH140, SCH160, XXS
Size 1/2-80 inch (DN15-DN2000)
Surface treatment Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,
Hot dipped Galvanized.
Inspection Factory in-house self check or Third Party inspection
Packing Wooden case, pallet or as customers’ requirement
Applications Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc
Heat Treatment Normalizing, Annealing, Quenching+Tempering
Payment L/C  T/T
Why choose us?
Certifications
Blind flange Certifications
Flange Production Process
Flange production process
Quality Assurance
Blind flange Quality Assurance
Packing & Shiping
Blind Flange transport
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