Stub End

Butt Welding Pipe Fittings

Size: 1/2"-80"/DN15-DN2000

Technical: Forged and pushing

Material: Carbon Steel, Stainless Steel, Alloy Steel

Carbon Steel:ASTM, A234WPB, A234WPC, A420WPL6, Q235,10#, A3, Q235A, 20G, 16Mn, DIN St37, St45.8, St52.4, St.35.8, St.35.8.

Stainless Steel:1Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni10 0Cr17Ni12Mo2Ti,00Cr17Ni14Mo2 304 304L 316 316L

Alloy Steel:16Mn Cr5Mo 12Cr1MoV 10CrMo910 15CrMo 12Cr2Mo1,A335P22 St45.8, ASTM A860 WPHY X42 X52 X60 X70

Standard: ASME/ANSI B16.9, B16.11, B16.28, JIS B2311, B2312, B2312, B2316 ASTM A403 MSS SP-43, SP-83, SP-97

Model: 45°/ 90°/180 LR/SR Elbow, Reducers, Tee, Bends, Cap, Cross.

Type: Seam Or Seamless

End: beveled end

Surface: Black Paint/Rust-proof Oil/Hot Dipped Galvanized

Wall Thickness: SCH10/10S, SCH20/20S, STD, SCH40/40S, XS, SCH80,SCH100, SCH120, SCH140, SCH160, XXS etc.(for ANSI),SGP(for JIS)

Elbow Angles: 30/45/60/90/180°

Connection: Welding

Shape:Equal, Reducing

Certificate: ISO -9001:2000, API, CCS

Application:Petrochemical & Gas industry, Power industry, Valve industry, Water works, Shipbuilding industry, Construction etc

Packing: Plywood Pallets/ Wooden Case Or As Per your Specification

MOQ: to be negotiated.

Sample: Available

Price: >>Get newest price list

Service: Customized OEM

Pakage: wooden case & pallet

Payment term: T/T or L/C

Delivery:7-30days according to order quantity.

Introduction

The stub ends are usually used with lap joint flanges, both of stub and lap joint flange can be purchased from EATHU. This flanged joint is an inexpensive flanged joint method suitable for low pressure and non-critical applications. Since the flange does not come into direct contact with the pipe, carbon steel short joints can be used to reduce the total weight and cost.

For more technical support please contact EATHU.


ASME B16.9: Lap Joint Stub Ends Wrought Steel Buttwelding Fittings (ASME)


Dimensions of ASME B16.9 MSS SP-43

Nominal PipeOutside DiameterOutside Diameter of BarrelDiameter of Lap G
Sizeat Bevel ODMaxMin(Nominal & Max)
(NPS)INMMINMMINMMINMM
½0.8421.30.89622.80.80920.51.3835
¾1.0526.71.10628.11.01925.91.6943
11.3233.41.376351.28432.6251
1.6642.21.71643.61.62941.42.564
1.948.31.96549.91.86947.52.8873
22.3860.32.45662.42.34459.53.6292
2.8873.02.96675.32.84472.24.12106
33.588.93.59691.33.46988.15127
4101.64.0961043.969100.85.5140
44.5114.34.593116.74.469113.56.19157
55.56141.35.683144.35.532140.57.31185
66.62168.36.743171.36.594167.58.5218
88.62219.18.743222.18.594218.310.62270
1010.75273.010.913277.210.719272.312.75324
1212.75323.812.91332812.719323.115381
1414355.614.17359.913.969354.816.25413
1616406.416.1841115.969405.618.5470
181845718.1946217.96945621533
202050820.2451419.96950723584
222255922.2456521.96955825.25641
242461024.2461623.96960927.25692

Dimensions of ASME B16.9 MSS SP-43

NominalLength FRadius R 
PipeASME LongASME Short & MSSMSS Type A & ASME (Nominal & Max) MSS Type B              (Max)
Size
(NPS)INMMINMMINMMINMM
½3762510.1230.030.8
¾3762510.1230.030.8
141022510.1230.030.8
41022510.1950.030.8
41022510.2560.030.8
261522.5640.3180.030.8
61522.5640.3180.030.8
361522.5640.38100.030.8
61523760.38100.030.8
461523760.44110.030.8
582033760.44110.061.5
682033.5890.5130.061.5
8820341020.5130.061.5
101025451270.5130.061.5
121025461520.5130.061.5
141230561520.5130.061.5
161230561520.5130.061.5
181230561520.5130.061.5
201230561520.5130.061.5
221230561520.5130.061.5
241230561520.5130.061.5

*All dimensions are in mm unit(inch unit data sheet is also available upon request).

*Check the tolerances and materials for butt welding pipe fittings from "Price List and Techinical"

*Tolerances of dimensions are in conformance with ASME B16.9


Question: I want to know the difference between Stub End Type A and Type B, which one is more suitable for me? 

Eathu answer: Stub End has three different types – Type A, Type B, Type C, they are classified by the different “R” – the lap corner. But in actual working, “type A” is the common type as it is matching with lap joint flange specially.


Type A: To match standard lap joint flange, it is the default type if the client didn’t indicate the type specifically.

Type B: Stub End B type is mainly used for slip-on flanges and backing flanges, its lap angle is different from “type A”.

Type C: It can be used either with lap joint flange or slip-on flange. But it is not common type, most of eathu customers need “Type A” or “Type B” stub end.


Butt welding pipe fittings standard: 

ASME B16.49-2007 Factory-Made,Wrought Steel, Buttwelding Induction Bends for Transportation and 

ASME-B16.9-2007 Factory-Made Wrought Butt Welding Fitting

DIN2617-1991 Steel butt-welding pipe fittings

JIS G3452 SGP 1997  Steel Butt-welding pipe fittings for ordinary use

Weight for butt welding pipe fitting

Tolerances for ASME DIN JIS MSS Butt Welding Pipe Fittings

Wall Thickness Schedules (ASME B36.10 B36.19)



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