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ST37 Blind Flange and RST37.2 Slip On Flange manufacturer in India


ST37.2 Steel Flange



St37-2 Material Specification


Specification ST37.2 Steel Flange
Flange Test Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flange Equipment Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Coating Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized
Manufacturer Length NPS 1⁄₂" To NPS 48”
Face Type RTJ/ FF/ RF/ lap joint/ Male & Female / Tongue & Groove.
Forging Methods Casting/ Forging/ Rolling/ Cutting
Supporting Material Gasket/ Ring Joint/ Flange Bolts
Manufacturer of Forged/ Threaded/ Screwed / Plate
Schedule SCH 5S, SCH 10, SCH 40, SCH 80, SCH 120, SCH 160, SCH 180 To XXS
Dimensions And Standard ASME B16.5
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production Technique Forged/ Heat treated and machined
Application Bitumen upgraders
Heavy oil refineries.
Nuclear power (mostly seamless).
Petrochemicals and acids.

ST37.2 Steel Flange Price List


Nominal Diameter Nominal pipe size in mm Pitch Circle Diameter In mm Thread holes Grade Pressure Price In INR (India) Per Piece
DN 80 88,9 160 8 x 18 mm Ø Carbon Steel ST37.2 290.00
DN 100 108 180 8 x 18 mm Ø - - 357.00
DN 100 114,3 180 8 x 18 mm Ø - - 429.00
DN 125 133 210 8 x 18 mm Ø - - 697.00
DN 125 139,7 210 8 x 18 mm Ø - - 925.00
DN 150 159 240 8 x 22 mm Ø - - 1285.00
DN 150 168,3 240 8 x 22 mm Ø Carbon Steel ST37.2 1505.00

Manufacturer of Non-alloy steel ST37.2 Collar Flange and EN 1.0037 Lapped Joint Flange in Reduced thickness with central hole


Types Of ST37.2 Flange


Din2576 Pn10 St37.2 Dn300 Flange

Din2576 Pn10 St37.2 Dn300 Flange

St37-2 Carbon Steel Flange

St37-2 Carbon Steel Flange

Carbon Steel St37-2 Pipe Flanges

Carbon Steel St37-2 Pipe Flanges

St37.2 4000pa Carbon Steel Flange

St37.2 4000pa Carbon Steel Flange

Carbon Steel St37 Flange

Carbon Steel St37 Flange

Carbon Steel St37-2 Flanges

Carbon Steel St37-2 Flanges

St37-2 Blind Flange

St37-2 Blind Flange

 Grade ST37-2 Weld Neck Flange

Grade ST37-2 Weld Neck Flange

St37-2 Slip On Flange

St37-2 Slip On Flange

Grade ST37-2 Threaded Flange

Grade ST37-2 Threaded Flange

 ASTM St37-2 Socket Weld Flange

ASTM St37-2 Socket Weld Flange

Steel St37-2 RTJ Flange

Steel St37-2 RTJ Flange

Carbon Steel St37-2 Pipe Flanges

Carbon Steel St37-2 Pipe Flanges

 St37.2 4000pa Carbon Steel Flange

St37.2 4000pa Carbon Steel Flange

Cs St37.2 Weld Neck Flange

Cs St37.2 Weld Neck Flange

St37.2 Flat Face Flange

St37.2 Flat Face Flange

 ST37 Flanges

ST37 Flanges

RST37.2 Flange

RST37.2 Flange


Manufacturer of DIN 24154/ DIN 86044 ST37 Plate Flanges and mild steel st 37 Puddle Flanges cutted from sheet


St37.2 Material Equivalent


German DIN 17100: 1980 (EN 10025: 1993)
US ASTM A283/A283M
European Union EN 10025-2: 2005
UK BS 4360
France NF A35-501
Japan JIS G3101; JIS G3106
India IS 2062

St37-2 Chemical Composition


Steel grade Styles Carbon, maximum, % Silicon, % Manganese, % Phosphorus, maximum, % Sulfur, maximum, % Nitrogen, maximum, %
ST37.2 Steel Flange Steel Angles 0.20 0.15 – 0.35 0.35 – 0.75 0.050 0.050 0.011

St37.2 Mechanical Properties


Steel grade Styles Tensile strength, ksi [MPa] Yield point, minimum, ksi [MPa] Elongation, minimum, δ, %
ST37.2 Steel Flange Steel Angles 52 – 67 [360 – 460] 34 [235] 25

St 37 2 Tensile Strength


Tensile strength (≥ N/mm2); Thickness (d) millimeter
Number Of Steel d < 3 3 < d < 100
St37-2 (1.0037) 360-510 340-470

St37-2 Yield Strength


Yield strength (≥ N/mm2); Thickness (d) millimeter
Number Of Steel d < 16 16< d < 40
St37-2 (1.0037) 235 225

St37-2 Carbon Steel Flanges Elongation


Elongation ( < , %); Thickness (d), millimeter
Number Of Steel 0.5 < d <1 1< d <1,5 1,5 < d <2 2 < d <2,5 2,5 < d <3
St37-2 (1.0037) 17 18 19 20 21

Supplier of carbon steel st37 Weld Neck Flange and din 2448 st 37 Socket Weld Flange with Visual, dimensional, thickness control

St37-2 Density


Material ST37.2 Flange Density: 7.85 g/cm3


St37-2 Melting Point


Melting point: 1420-1460 °C (2590-2660 °F)


St37-2 Carbon Steel Flange Dimensions


St37-2 Carbon Steel Flange Dimensions

St37-2 Carbon Steel Flange Dimensions

Carbon Steel St37 Flange Temperature Range


Working pressure by Class And BAR

TEMP(°C)15030040060090015002500
-29 TO 3819.651.168.1102.1153.2255.3425.5
5019.250.166.8100.2150.4250.6417.7
10017.746.662.193.2139.8233388.3
15015.845.160.190.2135.2225.4375.6
20013.843.858.487.6131.4219365
25012.141.955.983.9125.8209.7349.5
30010.239.853.179.6119.5199.1331.8
3259.338.751.677.4116.1193.6322.6
3508.437.650.175.1112.7187.8313
3757.436.448.572.7109.1181.8303.1
4006.534.746.369.4104.2173.6289.3
4255.528.838.457.586.3143.8239.7
4504.62330.74669115191.7
4753.717.423.234.952.387.2145.3
5002.811.815.723.535.358.897.9
5381.45.97.911.817.729.549.2

Check st37 metal Orifice Flanges and DIN 1.0037 Forged Flange mechanical properties, equivalent and yield stress

Torque Values Of St37.2 Welding Neck Flange


Flange Size InchFlange Size MM(Maximum) Radial Projection
No Deeper Than the Bottom In MillimeterDeeper Than the Bottom In Millimeter
1/2153.01.5
3/4203.01.5
1253.01.5
1 1/4323.01.5
1 1/2403.01.5
2503.01.5
2 1/2653.01.5
3804.51.5
3 1/2906.03.0
41006.03.0
51256.03.0
61506.03.0
82008.04.5
102508.04.5
123008.04.5
143508.04.5
1640010.04.5
1845012.06.0

DIN2576 PN10 St37.2 DN300 Flange Wall Thickness


Normal Size Of PipeOuter Diameter (O.D.)10 Schedule20 Schedule30 ScheduleSTD Wall40 Schedule60 ScheduleEXT Hvy80 Schedule100 Schedule120 Schedule140 Schedule160 ScheduleXX Hvy
½0.840.083......0.1090.109...0.1470.147.........0.1880.294
¾1.050.083......0.1130.113...0.1540.154.........0.2190.308
11.3150.109......0.1330.133...0.1790.179.........0.250.358
1 ¼1.660.109......0.140.14...0.1910.191.........0.250.382
1 ½1.90.109......0.1450.145...0.20.2.........0.2810.4
22.3750.109......0.1540.154...0.2180.218.........0.3440.436
2 ½2.8750.12......0.2030.203...0.2760.276.........0.3750.552
33.50.12--0.2160.216-0.30.3---0.4380.6
3 ½40.12--0.2260.226-0.3180.318----0.636
44.50.12--0.2370.237-0.3370.337-0.438-0.5310.674
55.5630.134--0.2580.258-0.3750.375-0.5-0.6250.75
66.6250.134--0.280.28-0.4320.432-0.562-0.7190.864
88.6250.1480.250.2770.3220.3220.4060.50.50.5940.7190.8120.9060.875
1010.750.1650.250.3070.3650.3650.50.50.5940.7190.84411.1251
1212.750.180.250.330.3750.4060.5620.50.6880.84411.1251.3121
14140.250.3120.3750.3750.4380.5940.50.750.9381.0941.251.406-
16160.250.3120.3750.3750.50.6560.50.8441.0311.2191.4381.594-
18180.250.3120.4380.3750.5620.750.50.9381.1561.3751.5621.781-
20200.250.3750.50.3750.5940.8120.51.0311.2811.51.751.969-
22220.25--0.375--0.5------
24240.250.3750.5620.3750.6880.9690.51.2191.5311.8122.0622.344-
2626---0.375--0.5------
30300.3120.50.6250.375--0.5------

Werkstoff St37-2 Flanges Weight Chart


Pressure ClassNominal Size Of Pipe  (NPS)Slip On (SORF Flange)Threaded (NPT Flange)Socket Weld (SWRF Flange)Lap Joint (LOOSE Flange)Blind (BLR FlangeF)Weld Neck (WNRF Flange)
Class 150 Flange½ 112122
¾222222
1222223
333333
1½ 333344
2555556
2½ 8888710
39999911.5
3½ 111211111312
4131313131716.5
5151515152021
6191919192726
8303030304742
10434343437054
126464646412388
14909090105140114
161069898140180140
18130130130160220165
20165165165195285197
22185185185245355225
24220220220275430268

Carbon Steel St37.2 Slip On Flange Bolt Size


Carbon Steel St37.2 Slip On Flange Bolt Size
Class 150Class 300Class 600
NPS# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud
1/16 RFRTJ1/16 RFRTJ1/4 RFRTJ
1/240.502-1/440.502-1/2340.5033
3/440.502-1/240.6333-1/240.633-1/23-1/2
140.502-1/2340.6333-1/240.633-1/23-1/2
1-1/440.502-3/43-1/440.633-1/43-3/440.633-3/43-3/4
1-1/240.502-3/43-1/440.753-1/2440.754-1/44-1/4
240.633-1/43-3/480.633-1/2480.634-1/44-1/4
2-1/240.633-1/2480.7544-1/280.754-3/44-3/4
340.633-1/2480.754-1/44-3/480.7555
3-1/280.633-1/2480.754-1/4580.885-1/25-1/2
480.633-1/2480.754-1/2580.885-3/45-3/4
580.753-3/44-1/480.754-3/45-1/481.006-1/26-1/2
680.7544-1/2120.754-3/45-1/2121.006-3/46-3/4
880.754-1/44-3/4120.885-1/26121.137-1/27-3/4
10120.884-1/25161.006-1/46-3/4161.258-1/28-1/2
12120.884-3/45-1/4161.136-3/47-1/4201.258-3/48-3/4
14121.005-1/45-3/4201.1377-1/2201.389-1/49-1/4
16161.005-1/45-3/4201.257-1/28201.501010
18161.135-3/46-1/4241.257-3/48-1/4201.6310-3/410-3/4
20201.136-1/46-3/4241.2588-3/4241.6311-1/411-1/2
24201.256-3/47-1/4241.50910241.881313-1/4

Class 900Class 1500Class 2500
NPS# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud# Studs And BoltsDiameter of Studs And BoltsLength of Stud
1/4 RFRTJ1/4 RFRTJ1/4 RFRTJ
1/240.754-1/44-1/440.754-1/44-1/440.754-3/44-3/4
3/440.754-1/24-1/240.754-1/24-1/240.7555
140.885540.885540.885-1/25-1/2
1-1/440.885540.885541.0066
1-1/241.005-1/25-1/241.005-1/25-1/241.136-3/46-3/4
280.885-3/45-3/480.885-3/45-3/481.0077
2-1/281.006-1/46-1/481.006-1/46-1/481.137-3/48
380.885-3/45-3/481.137781.258-3/49
481.136-3/46-3/481.257-3/47-3/481.501010-1/4
581.257-1/27-1/281.509-3/49-3/481.7511-3/412-1/4
6121.137-1/27-3/4121.3810-1/410-1/282.0013-1/214
8121.388-3/48-3/4121.6311-1/211-3/4122.001515-1/2
10161.389-1/49-1/4121.8813-1/413-1/2122.5019-1/420
12201.381010162.0014-3/415-1/4122.7521-1/422
14201.5010-3/411162.251616-3/4
16201.6311-1/411-1/2162.5017-1/218-1/2
18201.8812-3/413-1/4162.7519-1/220-3/4
20202.0013-3/414-1/4163.0021-1/422-1/4
24202.5017-1/418163.5024-1/425-1/2

Facing Type Of St37.2 Carbon Steel Blind Flange


Facing Type Of St37.2 Carbon Steel Blind Flange

  • Type A: Flat Face (FF)
  • Type B: Raised Face (RF)
  • Type C: Tongue Face (TF)
  • Type D: Grooved Face (GF)
  • 1Type E: Spigo
  • Type F: Recess
  • Type G: Ring Recess
  • Type H: O-Ring Groove

St37.2 Weld Neck Flange Tolerance


ST37.2 Steel Flange DiameterTolerance
(A) (Outer Diameter)
  • When Outer Diameter is 24 Inch or less: ±1/16" (1.6 mm)
  • When Outer Diameter is over 24": ±1/8" (3.2 mm)
(D) (Inner Diameter)
  • 10 Inches and smaller: ±1/32" (0.8 in mm)
  • 12 Inches thru 18": +1/8" (3.2 in mm)
  • 20 Inches and larger: -1/16" (1.6 in mm)
(B) Contact Face
  • 1/16" (RF): ±1/32" (0.8 mm)
  • 1/4" (RF), Tongue And Groove (male And female): ±1/64" (0.4 mm)
(J) Hub At Base Dai.
  • When hub base is 24 inches or smaller: ±1/16" (1.6 millimeter)
  • When hub base is over 24": ±1/8" (3.2 millimeter)
(H) Diameter of hub at point of welding
  • 5 inch or smaller: +3/32" (2.4 mm), -1/32" (0.8 millimeter)
  • 6 inch or larger: +5/32" (4.0 millimeter), -1/32 (0.8 mm)
(P) Drilling
  • (B.C.): ±1/16" (1.6 mm)
  • (B.H.) spacing: ±1/32" (0.8 mm)
  Eccentricity of (bc) with respect to facing
  • 2 1/2" or smaller ±1/32" (0.8 mm) max.
  • 3" or larger ±1/16" (1.6 mm) max.
(C) (W.T.)
  • 18 inch or smaller: ±1/8" (3.2 mm), -0"
  • 20 inch or larger: ±3/16" (4.8 mm), -0"
(K) hub Length
  • 10 Inch or smaller: ±1/16" (1.6 millimeter)
  • 12 Inch or larger: ±1/8" (3.2 millimeter)

Surface Finish Of St37.2 Flat Face Flange


Surface Finish Of St37.2 Flat Face Flange
Normal Pipe Size (A) (B)
1/2 3.0 1.5
3/4 3.0 1.5
1 3.0 1.5
1-1/4 3.0 1.5
1-1/2 3.0 1.5
2 3.0 1.5
2-1/2 3.0 1.5
3 4.5 1.5
3-1/2 6.0 3.0
4 6.0 3.0
5 6.0 3.0
6 6.0 3.0
8 8.0 4.5
10 8.0 4.5
12 8.0 4.5
14 8.0 4.5
16 10.0 4.5
18 12.0 6.0
20 12.0 6.0
22 12.0 6.0
24 12.0 6.0

Sizes Of St37-2 Steel Flanges


Sizes Of St37-2 Steel Flanges

Carbon Steel St37-2 Pipe Flanges Manufacturing Process


Carbon Steel St37-2 Pipe Flanges Manufacturing Process

St37.2 4000PA Carbon Steel Flange Applications


  • Specialty Chemicals
  • Power Generation
  • Condensers
  • Chemical Equipment
  • Gas Processing
  • Pulp and Paper Industry
  • Sea Water Equipment
  • Pharmaceutical Equipment
  • Off-Shore Oil Drilling Companies
  • Petrochemicals
  • Heat Exchangers
  • Pharmaceuticals

Gaskets For ST37 Flanges


Gaskets For ST37 Flanges
(Normal Size Of Steel Pipes) In Inch (I.D.) Inner Daimeter Gasket
(O.D.) Outer Daimeter Gasket
Class 150#/ LB Class 300#/ LB Class 400#/ LB Class 600#/ LB Class 900#/ LB
1/2 0.84 1.875 2.125 2.125 2.125 2.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1 1.31 2.625 2.875 2.875 2.875 3.125
1 1/4 1.66 3 3.25 3.25 3.25 3.50
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3 3.50 5.375 5.875 5.875 5.875 6.625
4 4.50 6.875 7.125 7.00 7.625 8.125
5 5.56 7.75 8.50 8.375 9.50 9.75
6 6.62 8.75 9.875 9.75 10.50 11.375
8 8.62 11 12.125 12.00 12.625 14.125
10 10.75 13.375 14.25 14.125 15.75 17.125
12 12.75 16.125 16.625 16.50 18.00 19.625