Lap Jiont Flanges use flanges, steel rings, etc. to put the flanges on the pipe ends, and the flanges can move on the pipe ends. The steel ring or flange is the sealing surface, and the function of the flange is to compress them. It can be seen that the loose flange is not in contact with the medium due to being blocked by the steel ring or flange. The movable flange pieces are generally matched with water supply and drainage fittings (the most common on expansion joints). Lap Jiont Flange is generally used on pipes, they are also called loose flanges, which are often used as connections to change materials.
We HT PIPE is the manufacture that provide all kinds of steel flanges like Lap Jiont Flanges, Blind Flanges, Plate flat Flanges, Weld Neck Flanges, Slip On Flanges, Socket Weld Flanges, and so on, and also other special flanges according to the client's requirement.
Lap Joint Flange Specification:
| Standard |
Type |
Class |
Size |
| ASME B16.5 |
WN/LWN/SO/Blind/Lap Joint |
150#-2500# |
1/2"-24"(Except Blind Flange 2500lb 1/2"-12") |
| EN1092-1:2002 |
Plate flange for welding/loose plate flange with weld-on
plate collar or for lapped pipe end/Blind Flange/WN flange |
PN2.5-PN100 |
DN10-DN4000 |
| JIS B2220 |
Welding Flange, Lap joint flange, threaded flange |
PN6-PN100 |
DN10-DN1500 |
| BS4504 BS10 TableD/E |
Plate Flange for welding/WN flange/Blank Flange |
PN6-PN100 |
DN10-DN1500 |
| Sealing Surface |
RF FF RTJ TF GF LF LM |
| Flange Face Finish |
Stock Finish/Spiral Serrated/Concentric Serrated/Smooth Finish(Ra 3.2 and 6.3 micrometers) |
| 125-250 AARH(it is called smooth finish) |
| 250-500 AARH(it is called stock finish) |
| Coating |
Vanish, yellow paint, anti-rust oil, galvanizing etc |
Lap Joint Flange Material Grades:
| Carbon Steel |
ASTM /ASME A/SA105(N), A350 LF2/LF3, A694 F52, F56, F60, F65, F70 |
| Alloy Steel |
ASTM/ASME A/SA 182 F5, F9, F11, F22, F91 |
| Stainless Steel |
ASTM/ASME A/SA 182 F304, 304L, 304H, 310H, 316, 316H, 316L,
316Ti, 317, 317L, 321, 321H, 347, 347H, 904L |
Duplex and
Super Duplex |
ASTM/ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61,
S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950 |
| Nickel Alloy Steel |
ASTM/ASME B/SB 564 UNS N02200(NICKEL 200), UNS N04400, (MONEL 400),
UNS N08825( INCOLOY 825), UNS N06600(INCONEL 600), UNS N06601(INCONEL 601),
UNS N06625(INCONEL 625), UNS N10276(HASTELLOY C276) |
| ASTM/ASME B/SB160 UNS N02201(NICKEL 201), ASTM B/SB472 UNS N08020(Alloy 20) |
| Copper Alloy |
ASTM/ASME B/SB151 UNS N07060, 71500, C70600(CuNi 90/10), C71500(CuNi 70/30) |
| Titanium |
ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7 |
Manufacturer, exporter & supplier of ASME/ANSI B16.5 Carbon steel Lap Jiont Flanges, Alloy steel Lap Jiont Flanges, Nickel alloy steel Lap Jiont Flanges, Stainless steel Lap Jiont Flanges, Duplex steel Lap Jiont Flanges, ASTM A105/105N, ASTM A350 Lf2, ASTM A694, ASTM A182, ASTM B564 Lap Jiont Flanges manufaturer in Zhengzhou HT PIPE.
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