Wrought Steel Fittings

Bends and Springs

Taper Threads

Bends and Springs Taper Threads
NominalBore(mm)Bends Type90°Centre toFace MinimumApproximateRadiusSprings
Type 2Type 3Type 4
112½°135°157½°
Centre to Face Minimum
A(mm)R(mm)C(mm)D(mm)E(mm)
65132484444 
86441605754
107348676460 
158657797673 
2010273928986
2512189108105102 
32146108133127124 
40165127149143140
50203159181175168 
65248197222213206 
80292232260248241 
100381308340324318
125540457476457444 
150622534572540527 

Bends

Type 1. These are socketed as illustrated

Springs

These are supplied without sockets unless otherwise ordered.  The angle should be stated on the enquiries and orders.  Springs can be made to any angle required.

Screwing

Screw threads comply with the requirements of the SEBS1109. (ISO pipe threads for pipes and fittings where pressure-tight joints are made on the threads).

Manufactured from medium and heavy pipe.  Available in galvanised, black and steam quality.

Running Nipples and Barrel Nipples

Running Nipple (Parallel Thread) and Barrel Nipple (Taper Thread
Nominal Bore(mm)Standard Lengths
Running NipplesBarrel Nipples
Minimum A
(mm)
ToleranceMinimum C
(mm)
Tolerance
613 32 
819 38+ 3mm
1021 38 
1527+ 1.5mm51 
2030 55+ 4.5mm
2533 60 
3238 70 
4038 70+ 6mm
5048 79 
6551+ 3mm89 
8057 102 
10070 114+ 8mm
12578 124 
15078 127 

Manufactured from medium and heavy pipe.  Available in galvanised, black and steam quality.

Sockets

Screwed BSP thread

Parallel Thread
Nominal Bore
mm
Outside Diameter
A – mm – min
Length*
B – mm – min
Mass
kg
614.0190.017
817.5270.035
1021.7280.046
1525.5360.081
2031.0380.107
2538.7450.170
3247.3500.261
4053.4500.317
5066.5580.494
6582.4670.734
8096.4731.173
100123.0851.768
125151.0922.774
150178.0923.841

*Not applicable to faced socket (see Longscrews)

Longscrews

Longscrews
Available with steel sockets and with or without maleable iron backnuts as required.NOTE: The tolerances on widths across flats of backnuts shall be ±0.8mm.
NominalBoremmFace SocketMalleable Iron Hexagon BacknutMin. effectStandard Lengths 
Minimum LengthAmmTol. onLengthNom. WidthAcross FlatsmmMinimum
Thicknessmm
Tol. onThicknessBLength of LongThreadmmCmin.mmCmax.mmDmin.mmDmax.mmMasskg
1535 328 521001502002500.242
2037+ 3mm379+ 1.5mm541001502002500.319
2543 469.5 621001502002500.503
3248 6011 701502002503000.916
4048+ 4.5mm6412+ 4.5mm711502002503001.029
5057 7813 821502002503001.529
6565 9717 971502002503002.118
8071 11421 1062002503004003.507
10084+ 6mm14022+ 3mm1212002503004005.182

Elbows, Equal Tees and Socket Unions

Screwed BSP thread – Parts 1 & 2

Elbow
Nominal SizemmMinimum Length AmmMinimum ThicknessmmMasskg
6193.50.03 
8243.50.04 
10273.50.07 
15374.00.10 
20384.00.14 
25444.50.17
32515.00.30
40545.50.41
50606.00.64
65676.01.00
80737.01.62
100867.02.30
125987.53.35
150988.54.45

Elbows, Equal Tees and Socket Unions

Screwed BSP thread – Parts 1 & 2

Equal Tee
Nominal SizemmMinimum Length AmmMinimum Thicknessmm
6160.05
822 0.07
10240.11
15320.25
20350.25
25430.41
32510.64
40521.05
50641.68
65762.30
80893.65
1001156.77
12514010.00
15016014.62
Socket Union
Nominal SizemmMinimum Length AmmMinimum Thicknessmm
6380.09
8440.13
10510.18
15570.25
20670.41
25760.62
32850.91
401001.13
501101.71
651272.30
801324.12
1001756.84

BS 1740 applies to welding and seamless pipe fittings of nominal sizes (6mm to 150mm) inclusive, for use with steel tubes to SABS / SANS 62 screwed BSP thread to ISO 7/1.

Galvanising

Can be supplied galvanised if required.

Screwing

Threads for the screwed ends of the fittings comply with the appropriate reuirements of BS 21.

Pressure Tests

  • An internal hydrolic pressure of 5MN/m²
  • An internal hydrolic pressure of 0.7MN/m² while completely imeersed in water or light oil.

Reduced and Standard Sockets

Screwed BSP thread – Parts 1 & 2

Reducing Socket
NominalmmMasskgMinimum
Lengthmm
Nominal Size
 1 x 2mm
Minimum Length
Amm
Masskg
8 x 60.042550 x 1570 0.64 
   50 x 20680.64
10 x 60.063050 x 25670.64
10 x 80.062950 x 32650.64
   50  40640.64
15 x 60.0941   
15 x 80.094065 x 25761.25
15 x 100.093865 x 32751.25
   65 x 40731.25
20 x 80.124465 x 50711.25
20 x 100.1243   
20 x 150.124180 x 25861.98
   80 x 32841.98
25 x 80.215480 x 40831.90
25 x 100.215280 x 50811.98
25 x 150.215180 x 5579 
25 x 200.2149   
   100 x 401052.90
32 x 100.3060100 x 501002.90
32 x 150.3059100 x 551002.90
32 x 200.3057100 x 80982.90
32 x 250.3056   
   125 x 801154.40
40 x 150.4065125 x 1001154.40
40 x 200.4064   
40 x 250.4062150 x 801406.10
40 x 320.4060150 x 1001406.10
Standard Socket
Nominal SizemmMinimum
Outside Diameter
A

mm
Minimum Length
Bmm
Masskg
615.0190.02
818.5270.03
1022.0280.04
1527.0370.08
2032.5390.11
2539.5460.18
3249.0510.26
4055.0510.32
5068.0600.51
6584.0691.11
8098.0751.63
100124.0872.43
125151.0963.53
150178.0965.41