A lap joint flange is a type of flange that is used in piping systems. It is made up of two parts: a stub end and a lap joint ring flange. The stub end is butt welded to the pipe, and the lap joint ring flange is then slid over the stub end. The flange ring has a flat face that is used to seal against the gasket.
Technical Specifications
Material: Carbon steel, stainless steel, alloy steel
Size: 1/2" to 48"
Pressure class: 150 to 2500
Face type: Flat Face
Sealing method: Gasket
Advantages of Lap Joint Flanges
Easy to install and maintain
Can be used in a variety of materials and sizes
Available in a variety of pressure classes
Applications
Lap joint flanges are used in a variety of applications, including:
Chemical processing
Oil and gas
Power generation
Water treatment
ProductASME 165 lapjoint flanges BrandRenaissance Pipe Fitting Inc SizesRefer the specification ConditionNew Rating42 based on 26 reviews priceStart from 20 USD RFP India is a determined manufacturer of high quality of industrial lap joint flanges in India It is very much similar to slipon flange where it is having a radius at the junction of the bore and flange face that is for to create a lap stub end In the meantime the look on the stub end forms out by means of the gasket face on the flange Lap Joint flanges are being used in applications where parts of the piping systems need to be taking away from each other quickly and easily for inspection and replacement These lap joint flanges are being provided in fullscale range and are extensively used at all the pressures RANGE 15 NB to 60 1500NB in 150 LBS 300 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS ASA 150 ASA 300 PN 6101625 4064100160 ETC available with NACE MR 0175 SIZE 15NB to 60 1500NB CLASS PRESSURE Class Pressure 150 300 600 900 1500 2500 PN6 PN10 PN16 PN25 PN40 PN64 DIMENSION B165 BS4504 EN1092 B1636 B1647 B1648 MSS SP44 STD STD ANSI Flanges ASME Flanges DIN Flanges EN Flanges BS Flanges API JIS NACE etc FEATURES Dimensional accuracy Corrosion resistance High efficiency Excellent finish Durable Stainless Steel Lap Joint Flanges Standard ASTM ASME ASA 182 Grade F 304 304L 304H 309S 309H 310S 310H 316 316TI 316H 316L 316LN 317 317L 321 321H 347 347H 904L Duplex Steel Lap Joint Flanges Standard ASTM ASME ASA 182 Grade F 44 F 45 F51 F 53 F 55 F 60 F 61 Aluminium Lap Joint Flanges Standard ASTM B247 B361 Grade 2024 6061 6063 6101 7075 Titanium Lap Joint Flanges Standard ASTM B381 Grade Grade 1 Grade 2 Grade 4 Grade 5 Grade 6 Grade 7 Grade 9 Grade 19 Grade 23 Carbon Steel Lap Joint Flanges Standard ASTM A 105A694 A350 LF3A350 LF2 Grade F42465256606570 Low Temperature Carbon Steel Lap Joint Flanges Standard ASTM A 350 LF2 A350 LF3 Alloy Steel Lap Joint Flanges Standard ASTM A182 Grade F1F5F9F11F22F91 Copper Alloy Lap Joint Flanges Standard ASTM ASME SB 61 62 151 152 Grade UNS NO C 70600 CU NI 9010 C 71500 CU NI 7030 C 71640 Nickel Alloy Lap Joint Flanges Standard ASTM ASME SB 564 160 472 Nickel 200 UNS N02200   Nickel 201 UNS N02201   Monel 400 UNS N04400 Monel K500 UNS N05500   Inconel K600 UNS N06600   Inconel 601 UNS N06601 Inconel 625 UNS N06625   Inconel 800 UNS N08800   Inconel 800H UNS N08810 Inconel 825 UNS N08825   Hastelloy C276 UNS N10276   Alloy 20 UNS N08020 Test Certificate Manufacturer Test Certificate as per EN 10204 31 nbsp Types Of Lap Joint Flanges SS 310 310S Lap Joint Flanges Duplex Steel UNS S31803 Lap Joint Flanges Stainless Steel 304 304L Lap Joint Flanges Duplex Steel Lap Joint Flanges Stainless Steel 316 316L Lap Joint Flanges Duplex Steel UNS S32205 Lap Joint Flanges Stailess Steel 321 321H Lap Joint Flanges Super Duplex UNS S327
Lap Joint Flange
Lap joint flanges feature a flat face and are always used in conjunction with a stub end. Lap joint flanges resemble, in shape, slip-on flanges except for the radius at the crossing of the flange face and the bore to accommodate the flanged portion of the stub end. A lap joint flange slips over the pipe and seats on the back of the stub end and the two are kept together by the pressure of the bolts. The use of lap joint flanges in combination with stub ends is a cost-effective solution for stainless steel or nickel alloy pipelines, as the material of the lap joint flange can be of a lower grade (generally carbon steel) than the material of the stub end (which has to match the pipe grade, as in contact with the conveyed fluid). This arrangement, therefore, has these two advantages: reduces the overall cost of the pipelines flanged joints, as the use of higher grade materials is minimized; bolting operations are simplified, as the lap joint flange can be rotated around the pipe to help with bolts alignment.
Lap Joint flanges are used on piping fitted with lapped pipe or with lap joint stub ends. 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. These type of flanges are similar to slip-on flanges. The only difference is that it has a curved radius at the bore and face to accommodate a lap joint stub end. They may be used at all pressures and are available in a full size range. These lap joint flanges slip over the pipe, and are not welded. They are otherwise fastened to it. Here the bolting pressure is transferred to the gasket by the pressure of the flange against the back of the pipe lap. DIMENSION SPECIFICATIONS AS PER THE INTERNATIONAL STANDARD ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP, NACE SIZE : ½" to 48" (As Per Customer Requirement) CLASS : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6, 10, 16, 25, 40 Etc MATERIAL GRADE: Carbon Steel Lap Joint Flange : ASTM A105, ASTM A 694 F42 Low Temperature Carbon Steel Lap Joint Flange : A350 LF2/A350 LF3 Copper Alloys Lap Joint Flange : ASTM / ASME SB 61 / 62 / 151 / 152 C 70600 (CU -NI- 90/10 C 71500 (CU -NI- 70/30) UNS NO. C 92200, UNS NO. C 83600,UNS NO C 10100 C 10200, C 10300, C 10800, C 12000, C 12200 Nickel Alloys Lap Joint Flange : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276 Duplex Lap Joint Flange : ASTM A 182 UNS F 44, F 45, F51, F 53, F 55, F 60,F 61 Stainless Steel Lap Joint Flange : ASTM 182 F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L Alloy Steel Lap Joint Flange : ASTM SA 182 F1/F5/F9/F11/F22/F91 ADVANTAGE OF LAP JOINT FLANGES: Lap Joint flanges have certain special advantages over other flanges. These are as follows: Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes. Lack of contact with the fluid inside the pipe leads to the greater durability of these flanges. In piping systems which corrode or erode quickly, the lap joint flanges may be salvaged for re-use. The pressure-holding capacity of lap joint flanges is little. But it is better than that of slip-on flanges. The Lap Joint works as a backing ring on the stub. The main advantage of lap joint flange is that the bolt holes can be aligned with the matching flange after the welds have been completed. They allow rotational alignment capability. VALUE ADDED SERVICES : Hot Dip Galvanizing Electro Polish Test Certificate As Per EN 10204 - 3.1 & 3.2
Code No. JSI -71
The lap joint flange has two components, one stub end, and loose backing flange. The end piece is welded end to end to the pipe and the support flange moves freely on the pipe. The support flange may be of different material from the stub material and normally of carbon steel to save cost. The cover flange is used when frequent disassembling is required, and space is limited. The flange of the lap joint is almost identical to a slip-on flange, except that it has a radius at the intersection of the bore and flange face. These flanges are nearly identical to a Slip On flange with the exception of a radius at the intersection of the flange face and the bore to accommodate the flanged portion of the Stub End. The lap joint flange is practically identical to a slip-on flange except it has a radius at the intersection of the bore and flange face. This radius is necessary to have the flange accommodate a lap joint stub end. Normally, a lap joint flange and a lap joint stub end are mated together is an assembly system. Sizes we make range from 1/2" to 64" (and much larger size according to customers' demands).
Diameter - 20-30mm, 30-40mm, 40-50mm Thickness- 10-15mm Packaging Typ - Carton Technic - Black Oxide, Hot Dip Galvanized, White Zinc Plated Usage - Automobiles Use Specialities - Accuracy Durable, Auto Reverse, Hardend & Temper Dimension (LxWxH) - 250x130x195mm
Thickness - 30-40mm Finishing - Polished Packaging Type - Shrink Wrapping Inner Diameter - 20-40mm, 40-60mm Usage - Industry Use Specialities - Strong Construction
ProductASME 165 ring joint flanges BrandRenaissance Pipe Fitting Inc SizesRefer the specification ConditionNew Rating45 based on 28 reviews priceStart from 20 USD RFP India is one of the foremost Supplier and Manufacturers that offers high quality of Ring Joint Flanges These flanges are time and again used through their most significant benefit which is it can be used for unanticipated circumstances and in very changeable areas where welding is unsafe With dissimilar materials like Stainless steel Alloy steel and Carbon steel RFP India offer dissimilar types of Ring Joint Flanges such as SlipOn Threaded and Welding Neck amongst others Meanwhile these types of Flanges are also accessible in different sizes specification grades and thickness as per the needs of clients RANGE 15 NB to 60 1500NB in 150 LBS 300 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS ASA 150 ASA 300 PN 6101625 4064100160 ETC available with NACE MR 0175 SIZE 15NB to 60 1500NB CLASS PRESSURE Class Pressure 150 300 600 900 1500 2500 PN6 PN10 PN16 PN25 PN40 PN64 DIMENSION B165 BS4504 EN1092 B1636 B1647 B1648 MSS SP44 STD STD ANSI Flanges ASME Flanges DIN Flanges EN Flanges BS Flanges API JIS NACE etc FEATURES Dimensional accuracy Corrosion resistance High efficiency Excellent finish Durable Stainless Steel Ring Joint Flanges Standard ASTM ASME ASA 182 Grade F 304 304L 304H 309S 309H 310S 310H 316 316TI 316H 316L 316LN 317 317L 321 321H 347 347H 904L Duplex Steel Ring Joint Flanges Standard ASTM ASME ASA 182 Grade F 44 F 45 F51 F 53 F 55 F 60 F 61 Aluminium Ring Joint Flanges Standard ASTM B247 B361 Grade 2024 6061 6063 6101 7075 Titanium Ring Joint Flanges Standard ASTM B381 Grade Grade 1 Grade 2 Grade 4 Grade 5 Grade 6 Grade 7 Grade 9 Grade 19 Grade 23 Carbon Steel Ring Joint Flanges Standard ASTM A 105A694 A350 LF3A350 LF2 Grade F42465256606570 Low Temperature Carbon Steel Ring Joint Flanges Standard ASTM A 350 LF2 A350 LF3 Alloy Steel Ring Joint Flanges Standard ASTM A182 Grade F1F5F9F11F22F91 Copper Alloy Ring Joint Flanges Standard ASTM ASME SB 61 62 151 152 Grade UNS NO C 70600 CU NI 9010 C 71500 CU NI 7030 C 71640 Nickel Alloy Ring Joint Flanges Standard ASTM ASME SB 564 160 472 Nickel 200 UNS N02200   Nickel 201 UNS N02201   Monel 400 UNS N04400 Monel K500 UNS N05500   Inconel K600 UNS N06600   Inconel 601 UNS N06601 Inconel 625 UNS N06625   Inconel 800 UNS N08800   Inconel 800H UNS N08810 Inconel 825 UNS N08825   Hastelloy C276 UNS N10276   Alloy 20 UNS N08020 Test Certificate Manufacturer Test Certificate as per EN 10204 31 nbsp Types Of Ring Joint Flanges SS 310 310S Ring Joint Flanges Duplex Steel UNS S31803 Ring Joint Flanges Stainless Steel 304 304L Ring Joint Flanges Duplex Steel Ring Joint Flanges Stainless Steel 316 316L Ring Joint Flanges Duplex Steel UNS S32205 Ring Joint Flanges Stailess Steel 321 321H Ring Joint Flanges
