Lap joint stub end 4" long & short pattern — ASME B16.9 / MSS SP-43
Lap joint stub end 4" long & short pattern to ASME B16.9 / MSS SP-43: barrel od max 116.7 mm, barrel od min 113.5 mm, length f — long pattern 152 mm, length f — short pattern 76 mm, fillet radius r 11 mm.
Dimensions of Lap joint stub end 4" long & short pattern
| Symbol | Dimension | Value |
|---|---|---|
| · | Barrel OD max | 116.7 mm (4.594 in) |
| · | Barrel OD min | 113.5 mm (4.469 in) |
| · | Length F — long pattern | 152 mm (5.984 in) |
| · | Length F — short pattern | 76 mm (2.992 in) |
| · | Fillet radius R | 11 mm (0.433 in) |
| · | Lap diameter G | 157 mm (6.181 in) |
SKU TSH-BW-ASME-B16-9-MSS-SP-43-LONG-SHORT-PATTERN-4 · Standard ASME B16.9 / MSS SP-43 · verified by 2+ sources
Purchase description
LAP JOINT STUB END, 4", LONG & SHORT PATTERN, ASTM A234 WPB, ASME B16.9 / MSS SP-43
Available materials: ASTM A234 WPB, ASTM A420 WPL6, ASTM A403 WP304/304L, ASTM A403 WP316/316L, ASTM A234 WP11, ASTM A234 WP22, ASTM A234 WP91, ASTM A815 UNS S31803.
Notes
- Ferrobend B16.9 long- and short-pattern tables; MetalsPiping agrees on most rows; hardhatengineer confirms long-pattern F (76 / 102 / 152 mm steps) for small sizes.
- NPS 1-1/2 lap dia G: Ferrobend/MetalsPiping 73 mm, Skyland Metal 74 mm — 73 kept.
- Short pattern = MSS SP-43 length: Wermac/fgssteel SP-43 Sch 10S tables give F 50.8 mm (NPS 1/2) to 152.4 mm (NPS 24) and G 34.9 mm (NPS 1/2), 692.2 mm (NPS 24), consistent with the rounded values here.
- MSS SP-43 radius: Wermac lists Type A 3.05 mm / Type B 0.76 mm at NPS 1/2 (inch chart 0.12/0.03 in); other metric charts give ~3.17 mm. R above is the B16.9 fillet radius.
Other sizes — Lap joint stub end, long & short pattern
Frequently asked questions
What is the difference between a long radius and short radius elbow?
A long radius (LR) elbow has a centre-line radius of 1.5 × NPS and is the default choice. A short radius (SR) elbow has a radius of 1.0 × NPS. SR elbows save space but add pressure drop and are not suitable for pigging.
What is the centre-to-end dimension of a 90° LR elbow?
For ASME B16.9 90° LR elbows the centre-to-end dimension A is 1.5 × NPS in inches. For example, a 6" elbow is 229 mm (9 in) and a 4" elbow is 152 mm (6 in).
What is the difference between a concentric and an eccentric reducer?
A concentric reducer keeps both ends on the same centre line. An eccentric reducer has one flat side. Eccentric reducers go on pump suctions with the flat side on top, so air pockets cannot form.
What is a 3D or 5D bend?
A bend whose centre-line radius is 3 or 5 times the nominal pipe size. They are usually made by induction bending and supplied with tangent lengths. 5D bends allow pigging in pipelines.