BSP Union

~~USD30~~ USD28

Threaded Union 2" BSPP ASTM A182 F91 MSS SP 83

SKU: SH157 Category: Steel Pipe Unions

General Details

Steel Union Fitting

Steel union fitting can be divided into socket weld and screw type, according to the thread type, there are normally NPT union and BSP union.

We stock abundant of BSP pipe fittings for our Southeast Asia market, they are mostly 90 degree elbow, threaded coupling, cap, bushing, equal tee and cross. All of them are mostly in material of carbon steel, alloy steel and stainless steel.

BSP Union Dimensions

Usually we manufacture the Class 3000 threaded union according to MSS SP-83. The size is available in 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″ and 3″.

Class 3000 Threaded Union Dimensions

Carbon Steel Threaded Fittings

ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Stainless Steel BSP Fittings

ASTM A182 F304/304L/F304H, F316/316L, F310, F317, F321, F309

Duplex Steel BSP Threaded Fittings

ASTM A182 F51, F53, F55, F56, F57

Alloy Steel Threaded Pipe Fittings

ASTM A182 F1, F5, F9, F11, F12, F22, F91

What is BSP Thread?

There are two types of threads as following:

Parallel (straight) threads, British Standard Pipe Parallel thread (BSPP; originally also known as British Standard Pipe Fitting thread/BSPF and British Standard Pipe Mechanical thread/BSPM), which have a constant diameter; denoted by the letter G.

Taper threads, British Standard Pipe Taper thread (BSPT), whose diameter increases or decreases along the length of the thread; denoted by the letter R.

BSP Threads

How do you Identify BSP and NPT Pipe Fittings?

UN/UNF and BSPP pipe fittings have parallel threads, and NPT/NPTF and BSPT fittings have tapered threads. Usually it is hard to identify by looking, mostly we use the Go/no go Gauge tool whatever in factory or end user’s hand. As a responsible manufacturer and supplier of BSP Threaded Fittings, we inspect Union one by one and take a video for customer’s reference. Make a good quality and provide right product are our keyword.

Threaded Union Features

Male and Female.
Excellent Corrosion Resistance.
High Tensile Strength.
Durability.
Weldability.
Formability.
Dimensional accuracy.

Technical Info

ASTM A182 F91 Properties

Chemical Composition

C	Mn	Si	P	S	Cr	Mo	Ni
0.08 – 0.12	0.3 – 0.6	0.2 – 0.5	0.02	0.01	8-9.5	0.85-1.05	0.4

Mechanical Properties

Tensile Strength	Yield Strength	Elongation
485 (Mpa)	275 (Mpa)	20 (%)

Specification

MSS SP 83 Union Drawing & Specification

It covers dimensions of Class 3000 Unions with BSP thread ends.

MSS SP 83 Union Drawing

Nominal Size		Pipe End	Wall	Bore	Male Flange	Nut	THRD Per Inch	Bearing	Length AssemClear Assem. Nut
DN	NPS	A min	C min	D	F min	G min	H	J min	L nom	N
6	1/8	14.7	2.4	8.4 6.4	3.2	3.2	16	1.2	41.4	51
8	1/4	19.1	3.0	11.1 9.4	3.2	3.2	16	1.2	41.4	51
10	3/8	22.9	3.2	14.3 13.5	3.4	3.4	14	1.4	46.0	56
15	1/2	27.7	3.7	17.9 17.1	3.7	3.7	14	1.5	49.0	59
20	3/4	33.5	3.9	23.0 21.4	4.1	4.1	11	1.7	56.9	66
25	1	41.4	4.5	29.0 27.7	4.6	4.4	11	1.9	62.0	79
32	11/4	50.5	4.9	37.7 35.4	5.3	5.2	10	2.1	71.1	94
40	11/2	57.2	5.1	43.5 41.2	5.8	5.6	10	2.3	76.5	112
50	2	70.1	5.5	55.6 52.1	6.6	6.4	10	2.7	86.1	132
65	21/2	85.3	7.0	66.3 64.3	7.5	7.1	8	3.1	102.4	150
80	3	102.4	7.6	82.6 77.3	8.3	8.0	8	3.5	109.0	176
Note: 1) H is the number of threads per inch with the min. of 4 tighting turns, and the female and male thread herein shall be machined per ASME B1.1 2A/2B 2) Thread shall be machined per ASME B1.20.1