BoYue Steel China Co.,Ltd
BoYue&Tianda Oil Pipe Co., Ltd
BoYue Industry (ShangHai) Co., Ltd
BoYue & BaoSteel Pipeline Equipment Co.,Ltd
Payment & Shipping Terms:
|Material:||Alloy Steel||Standard:||ASME B16.5|
|Material Grade:||A182 304||Type:||RF/FF/MFF/LF/LM/RJ/TG/TF/GF|
lap joint pipe flanges,
stub end flange
Stainless steel rf lap joint collar flange 2' 300# ASME B16.5 RF FF RTJ 150# 254SMO S31254 DIN 1.4547
Duplex And Super Duplex:
ASTM A/SA182 F51,F53,F55,F59,F60(W1.4462,1.4410,1.4501,1.4507,ETC)
ASTM B564 N10276,N04400,N06600,N06601,N06625,N08800,N08020 ,ETC
Lap Joint Pipe Flanges Definition:
The lap joint pipe flange is that set the flange on the pipe end by using steel ring and flanging. The flange
could be moved at the end of the pipe. Steel ring or flanging is the sealing surface, with flange to press th
em together. Because of the steel ring or the flanging block, the lap joint flange will not contact with the
liquid. So it is applicable to corrosion resistant pipelines.
Material of a Lap Joing Flange:
The stub end and lap joint flange is separated, so they could be different material grade,it is very common
that a carbon steel lap joint flange work together with a stainless steel stub end. The butt weld end of the
stub-end is like the neck of the weld neck flange, the diameter and thickness is according to the pipe for
connection.So the material of backing flange in a lap joing flange could be carbon steel commonly for low
cost,the material of stub end could be chosen as per the pipe material and fuild situation.
Lap joint flanges use a stub end that is welded to the pipe. A ring flange fits loosely around the stub end,
permitting easy flange alignment of the bolt holes. lap joint flange is also called Van Stone or Stub Flange.
The stub ends are available in three styles (Types A, B, and C) and two lengths (Short and Long).
Lap Joint flange
Lap Joint Flanges have all the same common dimensions as any other flange named on this page however
it does not have a raised face, they used in conjunction with a "Lap Joint Stub End".
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.
Their pressure-holding ability is little, if any, it better than that of Slip On flanges and the fatigue life for the
assembly is only one tenth that of Welding Neck flanges.
They may be used at all pressures and are available in a full size range.These flanges slip over the all pipe
and they are not welded or otherwise fastened to it. Bolting pressure itransmitted to the gasket by the pre-
ssure of the flange against the back of the pipe lap (Stub End).
Lap Joint flanges have certain special advantages:
1.Freedom to swivel around the pipe facilitates the lining up of opposing flange bolt holes.
2.Lack of contact with the fluid in the pipe often permits the use of inexpensive carbon steel flanges with
corrosion resistant pipe.
3.In systems which erode or corrode quickly, the flanges may be salvaged for re-use.
weld neck flange, slip on flange, blind flange, tube sheet, threaded flange,
socket weld flange, plate flange, spectacle blind, LWN, Orifice flange, anchor flange.
(En1092-1 PN10 Pn16 DN900 DN750 Plate Steel Stainless Steel Flange)
|Standard||ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc.|
SCH5S, SCH10S, SCH10, SCH40S,STD, XS, XXS, SCH20,SCH30,SCH40, SCH60,
SCH80, SCH160, XXS and etc.
Stainless steel: A182F304/304L, A182 F316/316L, A182F321, A182F310S,
A182F347H,A182F316Ti, A403 WP317, 904L, 1.4301,1.4307,1.4401,1.4571,1.4541,
254Mo and etc.
Carbon steel: A105, A350LF2, Q235, St37, St45.8, A42CP, E24 , A515 Gr60, A515 Gr 70
Duplex stainless steel: UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 ,
UNS32760, 1.4462,1.4410,1.4501 and etc.
Pipeline steel: A694 F42, A694F52, A694 F60, A694 F65, A694 F70, A694 F80 etc.
Nickel alloy: inconel600, inconel625, inconel690, incoloy800, incoloy 825, incoloy 800H,
C22, C-276, Monel400, Alloy20 etc.
Cr-Mo alloy: A182F11, A182F5, A182F22, A182F91, A182F9, 16mo3 etc.
Petrochemical industy;avation and aerospace industry;pharmaceutical industry;
gas exhaust;power plant;ship buliding;water treament,etc.
|Advantages||ready stock,faster delivery time;available in all sizes,customized;high quality|
|Product :Lap Joint/Loose Flange|
Duplex And Super Duplex:
DETAILS OF LAP JOINT FLANGE
|Place of Origin||China||Brand Name||BOYUE|
|Standard||ANSI B16.5||Type||Lap Joint/Loose Flange|
|ModelNumber||ASTM A/SA182 F51,F53||Thickness||#300 #900|
|Packing||Ply-Wood Cases||Payment||30%TT+70% Balance|
Supply Ability:10000Pieces / per Month
Packaging & Delivery
Packaging Details:Generally plywooden case or following customer's requirement.
|Minimum Order Quantity:||1pcs|
|Price:||Depending on quantity|
|Payment Terms:||T/T or Western Union or LC|
|Supply Ability:||10000pcs per month|
|Delivery Time:||7-100 days depending on quantity|
|Packaging Details:||Generally plywooden case or following customer's requirement.|