Business Type:
Trading Company
Business Range:
Ya Pear, Crown Pear, Pipe Fitting, Flange, Brass Valve, Stainless Steel Valve, Butterfly ..
Establishment:
2011
R&D Capacity:
ODM, OEM, Other
Terms of Payment:
LC, T/T, D/P, PayPal, WesternUnion, Small-amountpayment
Main Markets:
North America, Southeast Asia, Middle East
OEM/ODM Service
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PVC, Pipe, Pipe Fitting manufacturer / supplier in China, offering PVC Pipe Fittings for Drainage Water, PVC Sliding Windows, Pipe Making Machine and so on.

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Supplier Homepage Industrial Equipment & Components Fastener & Fitting Flange Carbon Steel Pipe Fittings Titanium Spacer Blind Flange Trade

Carbon Steel Pipe Fittings Titanium Spacer Blind Flange Trade

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Min. Order / Reference FOB Price
100 Piece US $0.10/ Piece
Local Area: Shijiazhuang, Hebei, China
R&D Capacity: OEM, ODM, Other
Payment Terms: LC, T/T, D/P, PayPal, WesternUnion, Small-amountpayment
Standard: ANSI, DIN, GB, JIS, GOST, BSW
Material: Carbon Steel
Connection: Flanged
Flange
We consider the logistic as important as the production. Our 8000 sq. meter Logistic Center, stores 2,000 tonsfrequently purchased flanges and can satisfy your purchasing orders in a short time. Meanwhile,the logistic Center is independent of the Production Departments. It accepts the products anglobal client so as to help us to guarantee the 100% quality.
WeldingNeck(WN),Plate(PL),SlipOn(SO),Blind(BL),SocketWelding(SW),Threaded(TH),LapJoint(LJ),LongWeldingNeck(LWN),LooseflangeSpecificationProductNameANSI B16.5 Flange
EN1092-1 Flange
DIN FlangeSizeANSI B16.5 1/2"-24"
EN1092-1 DN10-DN2000
DIN DN10-DN1000TypeWeldingNeck(WN),Plate(PL),SlipOn(SO),Blind(BL),
SocketWelding(SW),Threaded(TH),LapJoint(LJ),
LongWeldingNeck(LWN),LooseflangePressureClass:1503004006009001500and2500
PN6, PN10, PN16, PN25, PN40, PN63, PN100
6 Bar, 10 Bar, 16 Bar, 25 Bar, 40 BarStandardANSIB16.5CL150, CL300, CL400, CL600,CL900,CL1500,CL2500
EN1092-1 PN6, PN10, PN16, PN25, PN40, PN63, PN100
6Bar DIN2573,DIN2527,DIN2531
10Bar DIN2576,DIN2527,DIN2632
16Bar DIN2543,DIN2527,DIN2633
25Bar DIN2544,DIN2527,DIN2634
40Bar DIN2545,DIN2527,DIN2635MaterialCs(carbonsteel):ASTMA105ST37.2,SS400,Q235A
As(alloysteel):Q345(16Mn),12CrMoV,15CrMo,09MnNiD
SS(stainlesssteel):A201,304,304L,316,316L,ASTMA216SurfacetreatmentAnti-rustOil,Transparent/Yellow/BlackAnti-rust Paint, Zinc,
HotdippedGalvanized.connectionWeldingCertificateSGS,BSI,ISOPackingSeaworthypackage,PlywoodCasesorpalletoraspercustomersrequiremenApplicationPetroleum,chemical,power,gas,metallurgy,
shipbuildingconstruction, waterandnuclearpoweretc.MainmarketMiddleEast,Africa,South-EastAsia,Europe
SouthAmerica, North America, Australia,etcCountryoforiginChinaDefinition and Details of Flanges - Types of FlangesFLANGE TYPES
As already described before, the most used flange types acc. to ASME B16.5 are: WeldingNeck, SlipOn, SocketWeld, LapJoint, Threaded and Blind flange. Below you will find a short description and definition of each type, completed with an detailed image.
MOST COMMON FLANGE TYPESWELDING NECK FLANGE
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radio graphed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, Vweld (Butt weld).DETAILS OF WELDING NECK FLANGE
1. Weld Neck flange2. Butt Weld 3. Pipe or FittingSLIP ON FLANGE
The calculated strength from a SlipOn flange under internal pressure is of the order of two-thirds that of Welding Neck flanges, and their life under fatigue is about one-third that of the latter.
The connection with the pipe is done with 2 fillet welds, as well at the outside as also at the inside of the flange.
The X measure on the image, are approximately:
Wall thickness of pipe + 3 mm.
This space is necessary, to do not damage the flange face, during the welding process.
A disadvantage of the flange is, that principle always firstly a pipe must be welded and then just a fitting. A combination of flange and elbow or flange and tee is not possible, because named fittings have not a straight end, that complete slid in the SlipOn flange.DETAILS OF SLIP ON FLANGE
1. Slip On flange2. Filled weld outside 3. Filled weld inside4. PipeSOCKET WELD FLANGE
SocketWeld flanges were initially developed for use on small-size high pressure piping. Their static strength is equal to SlipOn flanges, but their fatigue strength 50% greater than double-welded SlipOn flanges.
The connection with the pipe is done with 1 fillet weld, at the outside of the flange. But before welding, a space must be created between flange or fitting and pipe.
ASME B31.1 1998 127.3 Preparation for Welding (E) Socket Weld Assembly says:
The purpose for the bottoming clearance in a Socket Weld is usually to reduce the residual stress at the root of the weld that could occur during solidification of the weld metal. The image shows you the X measure for the expansion gap.
The disadvantage of this flange is right the gap, that must be made. By corrosive products, and mainly in stainless steel pipe systems, the crack between pipe and flange can give corrosion problems. In some processes this flange is also not allowed. I am not an expert in this matter, but on the internet, you will find a lot of information about forms of corrosion.
Also for this flange counts, that principle always firstly a pipe must be welded and then just a fitting.DETAILS OF SOCKET WELD FLANGE
1. Socket Weld flange2. Filled weld3. Pipe X= Expansion gapLAP 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 SlipOn 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, better than that of SlipOn 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 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).
LapJoint flanges have certain special advantages:
· 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.DETAILS OF LAP JOINT FLANGE
1. Lap Joint flange2. Stub End 3. Butt weld4. Pipe or Fitting
STUB ENDA Stub End always will be used with a LapJoint flange, as a backing flange.
This flange connections are applied, in low-pressure and non critical applications, and is a cheap method of flanging.
In a stainless steel pipe system, for example, a carbon steel flange can be applied, because they are not come in contact with the product in the pipe.
Stub Ends are available in almost all pipe diameters. Dimensions and dimensional tolerances are defined in the ASME B.16.9 standard. Light-weight corrosion resistant Stub Ends (fittings) are defined in MSS SP43.LAP JOINT FLANGE WITH A STUB END
THREADED FLANGE
Threaded Flanges are used for special circumstances with their main advantage being that they can be attached to the pipe without welding. Sometimes a seal weld is also used in conjunction with the threaded connection.
Although still available in most sizes and pressure ratings, screwed fittings today are used almost exclusively in smaller pipe sizes.
A threaded flange or fitting is not suitable for a pipe system with thin wall thickness, because cutting thread on a pipe is not possible. Thus, thicker wall thickness must be chosen...what is thicker ?
ASME B31.3 Piping Guide says:
DETAILS OF THREADED FLANGE
1. Threaded flange2. Thread3. Pipe or Fitting
BLIND FLANGE
Blind Flanges are manufactured without a bore and used to blank off the ends of piping, Valves and pressure vessel openings.
From the standpoint of internal pressure and bolt loading, blind flanges, particularly in the larger sizes, are the most highly stressed flange types.
However, most of these stresses are bending types near the center, and since there is no standard inside diameter, these flanges are suitable for higher pressure temperature applications.DETAILS OF BLIND FLANGE
1. Blind flange2. Stud Bolt3. Gasket4. Other flange