ASME/ANSI B16.5 Lap Joint Flange

Carbon Steel Lap Joint Flange, Stainless Steel Lap Joint Flange, Alloy Steel Lap Joint(LJ) Flange Manufacturer In China

Cangzhou Taichang Pipeline Equipment LTD,. is a specialised manufacturer of high qualty ASME/ANSI/DIN industrial lap joint flanges in China. We offer immediate delivery programs for standard size carbon steel lap joint flanges and stainless steel lap joint flanges. Lap joint flanges manufactured in carbon steel special stainless steel grades, nickel alloy and alloy steel can be suppled with just in time programs.
Lap joint Flanges are similar to other types of industrial flanges, but it does not have a raised face. Lap joint flanges are used in conjunction with a Lap joint Stub End. The total initial cost of a lap joint flange along with a stub end is around one-third higher than that of comparable welding neck flanges. The pressure holding capacity of lap joint flanges is comparatively lower, and the fatigue life for the assembly is only one tenth that of welding neck flanges.

Lap Joint Flange And Stub End

The lap joint flange with the stub end assembly is normaly used in piping systems which require regular dismanthing for inspectiorand cleaning, These flanges slip over the pipe, and are not welded or otherwise fastened to it Bolting pressure is transmitted to the gasket by the pressure of the flange against the back of the pipe lap (Stub End).

Benefits of using lap joint flanges:
>Freedom to swivel around the pipe facilitates the lining up of opposing flange bolt holes.
>Lack of contact with the fluid in the pipe often permits the use of inexpensive carbon steel flanges with corrosion resistant pipe.
>In systems which erode or corrode quickly, the flanges may be salvaged for re-use.

Specification Chart Of Lap Joint Flange

Lap Joint Pipe Flanges Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Lap Joint Flange Size 1/2″ (15 NB) to 48″ (1200NB)
ASME Flange Pressure Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
JIS Flange Pressure 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
EN/DIN Flange Pressure 6Bar 10Bar 16Bar 25Bar 40Bar,
PN6, PN10, PN16, PN25, PN40
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Lap Joint Flange
Value added service CNC Machining, Customised Flanges
Production technique Forged, Heat treated and machined
Uses & application Petrochemicals and acids. Heavy oil refineries. Nuclear power (mostly seamless).
Bitumen upgraders.

Lap Joint Flange Material Grades

Stainless Steel Lap Joint Flange: ASTM A182 F202 F304/304L/304H, F316 /316L F316H F316T1, F310, F321,F904L
Carbon Steel Lap Joint Flange: ASTM A105/A105N, A350 LF, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46,F48,F50, F52, F56, F60, F65,F70.A516.60, 65, 70
Alloy Steel Lap Joint Flange: ASTM A182 F1, F5, F9,F11, F22, F91
Duplex Steel Lap Joint Flange: Duplex, Super Duplex, Nickel Alloys

Lap Joint Flange Process Flow Chart

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All elbow fitings are marked with Grade, heat No. , Size, Degree and our trade mark. On special requests we can also make custom marking on our products.

Quality Assurance

In Taichang all fittings and flanges are subiect to strict inspection at each stage of the production process from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM ASME MSS DIN EN and JIS codes and standards. Upon request, official certified inspection Agencies can be called in to witness the material reports dimensions and quality conformity of products.

Test reports

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third
Party Inspection Report.