EN10253-2 Carbon Steel Elbow Order

EN10253-2 European standard carbon steel butt weld elbows, as our core product, have gained international recognition for their stable quality and professional service. In early September, a Macedonian customer contacted us through our official website. We provided professional answers on product technical details and application scenarios, quickly building trust. The customer immediately sent us an inquiry.

Based on a mature pricing system, we provide quotes that combine customer needs and highlight key details. Efficient and meticulous response won customer recognition and successfully achieved cooperation. This order is mainly for small-sized elbows with higher production difficulty. We rely on our rich experience and strict process control to complete the production according to standards, and timely synchronize the inspection photos.

Considering the high requirements of customers for product quality, we strive for excellence in the subsequent packaging process. To avoid damage to the elbow groove during transportation, we have provided dedicated plastic pipe caps for each product; At the same time, according to the size and quantity of the product, specially customized export wooden boxes have been made to ensure the stability of the goods during long-distance transportation through reasonable internal separation and fixing design. This kind of meticulous service that exceeds expectations not only ensures the safe delivery of products, but also makes customers feel our dedication.

This cooperation has validated the product quality and the service philosophy of "professionalism+meticulousness". In the future, we will continue to provide high-quality pipe fitting solutions for international customers.

Procurement List

Item	Description of  Goods	Qty	Unit
1	seamless elbow diameter 21,3 х 3,2 mm (1/2") / 90 / R=1,5D MКС ЕN10253-2:2008/EN10253-2:2007-TYPE-A 3D DIN EN 10253-2:2008-09(DIN 2605-1)material P235TR1 according EN/St.37.0 DIN or equivalent	40	pc
2	seamless elbow   diameter 26,9 х 3,2 mm (3/4") / 90 / R=1,5D КС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D  DIN EN 10253-2 :2008-09 (DIN 2605-1) material P235TR1 according  EN / St.37.0  DIN      or equivalent	120	pc
3	seamless elbow   diameter 33,7 х 4,0 mm (1") / 90 / R=1,5D МКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P235TR1 according  EN / St.37.0  DIN     or equivalent	120	pc
4	seamless elbow  diameter 42,4 х 4,0 mm (5/4")/90/ R=1,5D MKC10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A 3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P235TR1 according  EN / St.37.0  DIN   or equivalent	120	pc
5	seamless elbow  diameter 48,3 х 4,0 mm (3/2") 90 / R=1,5D МКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P235TR1 according  EN / St.37.0  DIN or equivalent	50	pc
6	seamless elbow  diameter 57 х 4 mm  / 90 / R=1,5D MКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN / St.45.8  DIN   or equivalent	30	pc
7	seamless elbow  diameter 60,3 х 4,5 mm (2") / 90 / R=1,5D MКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P235TR1 according  EN / St.37.0  DIN   or equivalent	50	pc
8	seamless elbow  diameter 76,1 х 4,5 mm (5/2") / 90 / R=1,5D MКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN/ St.45.8  DIN  or equivalent	20	pc
9	seamless elbow  diameter 88,9 х 5,0 mm (3") / 90 / R=1,5D МКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN/ St.45.8  DIN  or equivalent	20	pc
10	seamless elbow  diameter 108 х 5 mm  / 90 / R=1,5D МКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN/ St.45.8  DIN  or equivalent	10	pc
11	seamless elbow   diameter 133 х 5mm  / 90 / R=1,5D MКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A   3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN/ St.45.8  DIN  or equivalent	10	pc
12	seamless elbow   diameter 159 х 7,1 mm / 90 / R=1,5D MКС ЕN 10253-2 : 2008  / EN 10253-2 : 2007 -  TYPE - A  3D DIN EN 10253-2 :2008-09 (DIN 2605-1) material P265GH according  EN/ St.45.8  DIN  or equivalent	10	pc
TOTAL		600	pc

What is EN10253-2 Standard?

EN 10253-2 is a standard for butt welded pipe fittings developed by the European Committee for Standardization. Its full name is "Butt welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements". This standard specifies the requirements for dimensions, tolerances, materials, manufacturing, testing, inspection, and marking of non alloy and ferritic alloy steel butt welded fittings used in pressure piping systems.

Scope of Application

Pipe fitting types: including butt welded fittings for pressure pipelines, including elbows (45°, 90°, 180°), tees (equal diameter, reducing diameter), reducing pipes (concentric, eccentric), pipe caps, etc.

Material range: EN10253-2 standard includes more than 20 European standard butt welding elbow materials, such as P235TR, P265TR, P235GH, P265GH, 16Mo3, 10CrMo5-5, X10CrMoV Nb9-1, L360NB, etc.

Pressure and temperature: mainly suitable for industrial low to medium high pressure pipeline systems, the working temperature needs to be combined with specific material characteristics, usually covering -20℃ to 400℃(subject to the upper temperature limit of the material grade).

Technical Requirements

Dimensions and tolerances: Ensure installation compatibility

Size requirements: The nominal diameter (DN) and nominal pressure (PN) of the pipe fittings must comply with the provisions of EN 10253-1 (Part 1: General Requirements for Welded Pipe fittings) to ensure compatibility with pipelines, valves, and other components.

Tolerance range:

Outer diameter tolerance: Depending on the type and size of the pipe fitting, it is usually controlled within±1% to±2% to avoid welding gaps that are too large or too small due to dimensional deviations.

Wall thickness tolerance: The minimum wall thickness shall not be less than 90% of the nominal wall thickness (higher for special areas) to prevent insufficient local strength.

Angle tolerance: The angle deviation of the elbow (such as a 90°elbow) should be≤±1.5 ° to ensure smooth turning of the pipeline.

Manufacturing Process

The manufacturing processes allowed by the standard must meet the premise of "not compromising material performance", and common compliant processes include:

Hot push molding (suitable for elbows);

Compression molding (applicable to tees and reducers);

Forging forming (suitable for high-pressure or small-sized pipe fittings);

Welding forming (additional requirements for welding process qualification, such as EN ISO 15614).

Inspection and Testing

Non destructive testing (NDT):

All butt welds must undergo 100% radiographic testing (RT) or ultrasonic testing (UT), and the testing standards must comply with EN ISO 17636 (RT) or EN ISO 17640 (UT). Fatal defects such as lack of fusion and cracks are not allowed.

The surface of the pipe fittings needs to undergo 100% magnetic particle testing (MT) or penetrant testing (PT) to check for surface cracks, folds, and other defects.

Mechanical performance testing: Samples need to be taken from finished pipe fittings for tensile testing and impact testing (impact energy requirements must be met in low-temperature environments) to ensure that the performance meets the requirements of the corresponding material grade (such as P265GH).

Chemical composition analysis: Verify whether the material composition meets the standard requirements through spectral analysis or chemical analysis, and prohibit harmful elements (such as S and P) from exceeding the standard.

Marking

Each qualified pipe fitting must be clearly marked, including at least:

Standard number (EN10253-2);

Material grade (such as P265GH);

Nominal diameter (DN) and nominal pressure (PN);

Manufacturer's name or trademark;

Batch number or serial number (used for quality traceability).

Relevant Standards

EN10253-2 is not an isolated standard and needs to be used in conjunction with other European standards to ensure system compliance:

Material standard: The material of the pipe fittings must comply with EN 10028 (flat steel products) or EN 10216 (seamless steel pipes), and the material requirements for P265GH are derived from EN 10028-2.

Welding standards: The welding process of pipe fittings must comply with EN ISO 15614 (Welding Procedure Qualification), and the qualifications of welders must comply with EN ISO 9606.

Pipeline system standard: The final installation must comply with EN 13480 (metal industrial pipelines) to ensure overall compatibility between the fittings and the pipeline system.

Characteristics of P235GH Carbon Steel Elbow

P235GH carbon steel elbow is a commonly used pressure bearing pipe fitting that complies with the European standard system. Its core characteristics are excellent welding performance and moderate cost. It is mainly suitable for industrial pipeline systems from low to medium pressure and from room temperature to medium temperature. It belongs to the basic and widely used non alloy steel type in EN 10253-2 standard.

Chemical Composition

CHEMICAL	LIMITS	C	Si	Mn	P	S	Cr	Mo	Ni	Al	Cu	Nb	Ti	V	Cr+Cu+Mo+Ni
P235GH(1.0345)	MIN									0.02
	MAX	0.16	0.35	1.20	0.025	0.020	0.30	0.08	0.30		0.3	0.01	0.04	0.02	0.7

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
P235GH(1.0345)	360-500	235 min	25 min

Manufacturing and Inspection Requirements

1. Common Manufacturing Processes

The manufacturing process of P235GH carbon steel elbow shall comply with EN 10253-2 standard, and common methods include:

Hot push molding: Suitable for medium to large elbows ranging from DN50 to DN600, it is made by heating steel pipes and pushing them with molds. After molding, the grain structure is more uniform and the mechanical properties are stable.

Compression molding: commonly used for small-sized elbows (DN ≤ 50), steel pipes are bent and trimmed by hydraulic press, with simple process and low cost.

Welding Forming: Only applicable to special specifications (such as large diameters, non-standard angles), butt welding process must be used, and the weld seam must undergo 100% non-destructive testing (in accordance with the "Specific Inspection Requirements" of EN 10253-2).

2. Key Inspection Items

To ensure safe use, the P235GH elbow must pass the following mandatory inspections:

Dimensional inspection: Check the nominal diameter (DN), wall thickness, angle (such as90° elbow deviation≤±1.5°), etc. The tolerance must comply with the A-level or B-level requirements of EN 10253-2 (depending on customer needs).

Non destructive testing: The weld seam requires 100% radiographic testing (RT, in accordance with EN ISO 17636) or ultrasonic testing (UT, in accordance with EN ISO 17640), and the surface requires 100% magnetic particle testing (MT) or penetrant testing (PT) to exclude defects such as cracks and lack of fusion.

Mechanical performance sampling: Samples are taken from finished elbows for tensile and impact tests to verify whether the performance meets the standards.

Chemical composition verification: Confirm material composition through spectral analysis to prevent misuse of steel grades.

Characteristics of P265GH Butt Weld Elbow

P265GH butt welded elbow is a medium and high pressure pressure bearing pipe fitting that complies with the European standard system. Its core advantages are high strength, excellent low-temperature toughness, and stable medium temperature performance. It is mainly suitable for harsh working conditions in industries such as petrochemicals and power. In the EN 10253-2 standard, it belongs to the "high-performance basic type" of non alloy steel.

Chemical Composition

CHEMICAL	LIMITS	C	Si	Mn	P	S	Cr	Mo	Ni	Al	Cu	Nb	Ti	V	Cr+Cu+Mo+Ni
P265GH(1.0425)	MIN									0.02
	MAX	0.20	0.40	1.40	0.025	0.020	0.30	0.08	0.30		0.3	0.01	0.04	0.02	0.7

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
P265GH(1.0425)	410-570	265min	25 min

Manufacturing and Inspection Requirements

1. Common Manufacturing Processes

The manufacturing of P265GH butt welded elbows needs to match their performance requirements, and common processes include:

Hot push molding: mainstream process, suitable for medium and large elbows ranging from DN50 to DN800. By heating the steel pipe to the phase transition temperature range and using a mold to push it, the structure is uniform after forming, and the low-temperature toughness of the material can be retained.

Forging forming: used for high-pressure or special size elbows (such as small-diameter, thick walled parts with DN ≤ 40). Refining grain size through forging, improving material density, and adapting to ultra-high pressure conditions.

Welding Forming: Only used for non-standard angles or ultra large diameter elbows, low hydrogen welding rods/wires must be used, stress relief heat treatment must be carried out after welding, and the weld seam must undergo 100% non-destructive testing.

2. Key Inspection Items

Following the "Specific Inspection Requirements" of EN 10253-2, the inspection items are more stringent:

Dimensional inspection: The nominal diameter (DN), wall thickness, angle (such as 90°elbow deviation ≤±1.5°), curvature radius, etc. must meet the standards, and the minimum wall thickness should not be less than 90% of the nominal wall thickness.

Non Destructive Testing:

100% radiographic testing (RT, in accordance with EN ISO 17636) or ultrasonic testing (UT, in accordance with EN ISO 17640) is required for welds, and fatal defects such as cracks and lack of fusion are not allowed.

100% magnetic particle testing (MT) or penetrant testing (PT) is performed on the inner and outer surfaces of the pipe fittings to inspect for surface cracks, folds, inclusions, and other defects.

Mechanical performance testing: Take samples from the finished elbow and conduct tensile, bending, and -20℃low-temperature impact tests to ensure that the performance meets the standards.

Chemical composition analysis: Verify the composition through spectral analysis, with a focus on confirming whether the aluminum, sulfur, and nitrogen contents meet the requirements.

Application

Due to its strict inspection requirements and material compatibility, EN10253-2 fittings are mainly used in industrial fields that require high safety and reliability:

Petrochemical industry: high-pressure process pipelines, reactor inlet and outlet pipelines;

Power industry: steam pipelines for power plant boilers, cooling water pipelines for steam turbines;

Nuclear power field: nuclear island auxiliary system pipeline (non nuclear safety level);

Energy transmission: High pressure transmission pipelines for natural gas and liquefied petroleum gas (LPG).