DIN Seamless steel pipe

DIN/EN seamless pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers’ trust and consistently favorable comments.


Our products for DIN/EN Standard has been listed as follows:
BS3059-II 360 Seamless tube
BS3059-II 360 Seamless tube
BS 3059 II 440 boiler tube
BS 3059 II 440 boiler tube
Tubes according to EN 10305-1
Tubes according to EN 10305-1
EN 10216-1 Seamless tubes for pressure purposes
EN 10216-1 Seamless tubes for pressure purposes
EN 10210 Hot finished seamless pipe
EN 10210 Hot finished seamless pipe
DIN 17175 steel seamless pipes
DIN 17175 steel seamless pipes

DIN 2448 seamless steel pipes
DIN 2448 seamless steel pipes
EN10216-2 Non-alloy and steel tubes
EN10216-2 Non-alloy and steel tubes
EN 10297 Mechanical seamless Tubes
EN 10297 Mechanical seamless Tubes
EN 10216 Seamless Steel Tubes
EN 10216 Seamless Steel Tubes
DIN2391 Seamless Precision Steel Tube
DIN2391 Seamless Precision Steel Tube
DIN 1629 Seamless Tubes
DIN 1629 Seamless Tubes

DIN 1630
Steel Grade: St37.4, St44.4, St52.4
Application: Seamless Circular Tubes of Non. Alloy Steels With Very High Quality Requirements
Dimension Range: 10.2-660 mm
DIN 2391-1
Steel Grade: St35, St45, St52
Application: Seamless Precision Steel Tubes
Dimension Range: 4-260 mm
DIN 2440
Steel Grade: St33.2
Application: Steel Tubes Medium Weight Suitable for Screwing
Dimension Range: 10.2-165.1 mm
DIN 2441
Steel Grade:St33.2
Application: Steel Tubes Heavy Weight for Suitable for Screwing
Dimension Range: 10.2-165.1 mm
DIN 2445-1
Steel Grade: St 52.4
Application: Seamless Steel Tubes Subjected to Dynamic Loading-1 Hot Finished Tubes for Use in Fluid Power Systems, Rated for Pressures from 100 bar to 500 bar
Dimension Range: 21.3-355.6 mm
DIN 2445.2
Steel Grade: St 37.4
Application: Seamless Steel Tubes Subjected to Dynamic Loading-2 Precision, Tubes for Use in Fluid Power Systems, Rated for Pressures from 100 bar to 500 bar
Dimension Range: 4.50 mm
DIN 2460
Steel Grade: St35
Application: Steel Pipes for Water Pipelines
Dimension Range: DN80-500
DIN 17175
Steel Grade: St35.8, S05.8,17Mn4,19Mn5, 15Mo3, 13CrMo910, 1OCrMo910, 14MoV63, X20CrMoV12l
Application: Seamless Circular Tubes Made From Steels with Elevated Temperatures
Dimension Range: 10.2-660 mm

Dimension tolerance

StandardTolerance
Out side DiameterWall ThicknessLength
mm
DIN 1630See Table 1See Table 2See Table 3
DIN 2391See Table 410%See Table 5
DIN 2440See Table 6-12.5%, + A±1m
DIN 2441See Table 2-12.5%, + A±1m
DIN 17172SeeTable 7≤13010%Fixed
Length
±500
<13012.5%
DIN 17173See Table 1See Table 2See Table 3
DIN 17175See Table 1See Table 2See Table 3
DIN 17176See Table 8See Table 2See Table 3
DIN 17179See Table 1See Table 2See Table 3
DIN 28180Outside
Diameter
Class 1Class 2Class 3See Table 9≤5000-0,+5
16-30±0.08Not
Applicable
±0.50<5000
-10000
-0,+10
38±0.15<10000By
agreement
A: The upper Limit is fixed by the permissible weight deviation.
Table 1: Permissible Deviation in Outside Diameter in DIN 1630, 17173, 17175, 17179
Outside Diameter – da
mm
Pertilisable Deviation in Diameter
Tube Barrel and Tube EndsAt Tube ends, Subject to
Particular agreement
<100 td>±1% da; (values up to ±0.5mm
are permitted)
±0.4mm
100≤da<200 td>±1% da±0.5% da.
≥200±1% da±0.6% da
Table 2: Permissible Deviation in Wall Thickness in DIN 1630, 17173, 17175, 17176, 17179
Permissible Deviation in Wall Thickness for Outside Diameter, da. and Wall Thicknesses, s
da ≤130mm130mm320mm
s ≤22s<4s≤0.05da0.05da
≤.11da
s<0.11da.s≤0.05da0.05da
≤0.09da
s<0.09da
+5%
-10%
+12.5
%10
±9%+17.5%
-12.5%
±12.5%±10+20%
-15%
+15%
-12.5%
+12.5%
-10%
Table 3: Types of Length and Permissible Deviation in Length in DIN 1630, 17173, 17175, 17176, 17179
Type of LengthPremissuble Deviations in Length,mm
Manfacturing LengthBy agreement
Specified Length±500
Exact
Length
≤6m-0,+10
<6-12mm-0,+15
<12mBy agreement
Table 4: Permissible Deviation in Outside Diameter in DIN 2391
Outside
Diameter
Permissible
Deviation
Outside
Diameter
Permissible
Deviation
Outside
Diameter
Permissible
Deviation
4-10mm±0.08mm75-81mm±0.35mm170-180mm±0.90mm
12-30mm±0.1mm85-90mm±0.40mm190-200mm±1.0mm
32-40mm±0.15mm95-100mm±0.45mm220-240mm±1.20mm
42-50mm±0.20mm110-12mm±0.50mm260mm±1.30mm
55-60mm±0.25mm130-146m±0.70mm
65-70mm±0.30mm150-160m±0.80mm
Table 5: Types of Length and Permissible Deviation in Length in 2391
Type of LengthPremissuble Deviations in Length,mm
Manfacturing LengthBy agreement
Fixed Length<2000 td>±500
≥200010%
Exact
Length
<500mm td>-0,+2
<500-2000mm-0,+3
<2000-5000-0,+5
<5000-7000-0,+10
<7000By agreement

Table 6: Permissible Deviation in Outside Diameter in DIN 2440, 2441

Outside Diameter
(mm)
Max
(mm)
Min
(mm)
Outside Diameter
(mm)
Max
(mm)
Min
(mm)
10.210.69.848.348.847.9
13.514.013.260.360.859.7
17.217.516.276.170.675.3
21.321.821.088.989.688.0
26.927.326.5114.3115.0113.1
33.734.233.3139.7140.0138.5
42.442.942.0165.1166.5163.9

Table 7: Permissible Deviation in Outside Diameter in DIN 17172

Nominal Outside
Diameter-”D”
(mm)
Max.Permissible Diameter Variation
Pipe BodyPipe End
D<200 td>±1%(Values up to ±0.5mm
are permissible in all case)
±1%(Values up to ±0.5mml.
are permissible in A case)
200≤ D<500 td>±1%±0.7%
500≤D±1%1.6mm
Table 8: Permissible Deviation in Outside Diameter in DIN 17176
Manufacturing ProcessLimit Deviation of Outside Diameter
Cold Forming±0.75%
Hot Forming≤100mm±0.75%
<100-320mm±0.9%
<320mm±1.0%

Table 9: Permissible Deviation in Wall Thickness in DIN 28180

Tube Outside DiameterPermisible Deviations In Wall Thickness for Thicknesses
Up to 2Exceeding 2
Tolerance of Classes I and 2±0.20±10% of Wall Thickness
Tolerance Class 3±0.20-10%, +15% of Wall Thickness

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Pipe fitting

Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.

Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.

Seamless steel pipe >>

Seamless steel pipe >>
Seamless steel pipe is alos called CDS pipes (Cold drawn seamless pipe).

Top seamless pipes

10CrMo9-10 13CrMo4-5 304H 304L 316 316L A519 1020 A519 1025 A519 1035 A519 1045 api 5ct API 5CT J55 API 5CT K55 API 5CT L80 API 5CT N80 API 5CT P110 API 5L API 5L PSL1 X42 API 5L PSL1 X46 API 5L PSL1 X52 API 5L PSL1 X56 API 5L PSL1 X60 API 5L PSL2 Grade B API 5L PSL2 X42 API 5L PSL2 X46 API 5L PSL2 X52 API SPEC 5CT ASME 556 ASME SA179 ASME SA210 ASME SA210 seamless tube ASME SA213 ASTM ASTM A106 ASTM A106 Gr.B Seamless pipe ASTM A106 Grade A ASTM A106 Grade B ASTM A106 Grade C ASTM A178 astm a179 ASTM A179 tubing ASTM A192 ASTM A199 ASTM A199 T11 ASTM A199 T22 ASTM A199 T5 ASTM A210 ASTM A500 astm a513 ASTM A513 1010 ASTM A513 1020 ASTM A513 1026 ASTM A513 4130 ASTM A513 Mechanical Tubing ASTM A519 ASTM A519 1010 ASTM A519 1020 ASTM A519 1025 ASTM A519 1035 ASTM A519 1045 ASTM A519 4130 ASTM A519 4140 ASTM A53 ASTM A556 ASTM B163 ASTM B729 ASTM SA53 BKS boiler tube Boiler tubes BS3059 BS3059 II 360 BS3059-II 440 carbon steel pipe carbon steel pipes carbon steel tube Carbon Steel tubes Casing Casing pipe DIN 17175 steel seamless pipes DIN 2391 DIN 2391 St35 DIN 2391 St45 DIN 2391 St52 DIN 2448 DIN1629 DIN1629 ST37.0 DIN1629 ST44.0 DIN1629 ST52.0 DIN17175 DIN17175 St35.8 DIN2391 St35 DIN2391 St45 DIN2391 St52 Drill pipe EN 10204 EN 10204 3.2 EN 10210 EN 10216 EN 10216-1 EN 10216-2 EN 10297 Mechanical Tubes EN10216-1 P195 EN10216-1 P235 EN10216-1 P265 EN10216-2 EN10305-1 E215 EN10305-1 E235 EN10305-1 E355 ERW Line pipes G3461 STB510 GB3087 GOST 633-80 Tubing Heat Exchanger tubes Heat exchanger tube heat exchanger tubes heat exchangers heater tubes High Pressure Seamless Boiler Tube High Steel Grade Line Pipes Hot finished seamless pipe Hot finished structural hollow section Internal Threaded Tubes J2H S355 J2H S355K2H JIS G3429 JIS G3429 STH11 JIS G3429 STH12 JIS G3429 STH21 JIS G3429 STH22 JIS G3441 JIS G3441 SCM415TK JIS G3441 SCM418TK JIS G3441 SCM420TK JIS G3441 SCM430TK JIS G3441 SCM435TK JIS G3441 SCM440TK JIS G3441 SCr420TK JIS G3454 JIS G3454 STPG370 JIS G3454 STPG410 JIS G3455 JIS G3455 STS370 JIS G3455 STS410 JIS G3455 STS480 JIS G3456 JIS G3456 STPT370 JIS G3456 STPT410 JIS G3456 STPT480 JIS G3461 STB340 JIS G3461 STB410 JIS G3462 JIS G3462 STB A12 JIS G3462 STB A13 JIS G3462 STB A24 JIS Seamless pipes JOH S275 JOH S355 Line pipe Line Pipe for Sour Service line pipes LSAW Line Pipes Mechanical Tubes mechanical tubing OCTG P195GH P235GH P265GH PIPE pipe for shipbuilding pipe lines pipeline Precision Seamless Steel Tube for Mechanical and Automobile Precision steel tube precision steel tubes pressure tube S235JRH S275 SA213 Seamless Line Pipes Seamless pipe Seamless pipes Seamless Pipes and Tubes for Pressure Applications Seamless Precision steel tubes Seamless Precision tubes seamless steel pipe Seamless steel pipe for low and medium pressure seamless steel pipes seamless steel tube Seamless Steel Tube for Fluid Transportation Service Seamless Steel Tube for Ship-building seamless steel tubes Seamless tube Seamless tubes Seamless Tubing St 37.0 Stainless Tubes Stainless Steel Pipes Stainless Steel Seamless Pipes Stainless Steel Seamless Tubes Stainless Steel Tubes steel line pipe Steel pipe steel pipes steel tube steel tubes Structural tube superheater tubes TP 304 Tubes for Fluid Transportation Service Tubes for Heat Exchanger and Condensers Tubes for high temperature service Tubes for Mechanical and Automobile Tubing U bend tube U bend Tubes U tube U-bend tubes