A long-standing Singaporean client, whom we have been working with since 2022, has sent an inquiry for European standard steel tubes, including EN10216-2 seamless tubes of 13CrMo4-5, P235GH, and P265GH, intended for the Singapore IWMF project. This client has maintained a strong relationship with us over the years and regularly purchases large quantities of steel tubes and pipe fittings from our company.

One month later, the client informed us of the good news that they had successfully won the bid.

As with previous orders, before production, we provided drawings for the client’s review. Prior to delivery, we submitted an EN10204 3.1 MTC, product photos, packaging photos, and spectrogram photos for the client’s approval before arranging shipment.

If you want to know more about EN10216-2 steel tube, please click here

If you have any questions about our products or need new services, please feel free to contact us. We will be happy to provide you with professional service.

EN 10216 Standard Overview

EN 10216 is the general standard for seamless tubes for pressure purposes within the European Union. It comprises five parts covering the technical and manufacturing conditions for seamless steel tubes for various applications. Specifically, EN 10216-2 applies to non-alloy and alloy seamless steel tubes with specified high-temperature properties. It details comprehensive requirements for these tubes when used in high-temperature environments, including chemical composition, mechanical properties, and manufacturing processes. Each part provides a detailed list of specific steel grades within its category, including upper and lower limits for chemical composition, mechanical property specifications (at room temperature and elevated temperatures), heat treatment conditions, and specific inspection requirements.

Product List

Item	Material	Item Details	Size	Thk (mm)	Qty	Unit
1	13CrMo4-5/1.7335	SEAMLESS PIPES BE × 6MTR	DN200	6.0	264	M
2	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN40	2.6	6	M
3	P265GH/1.0425	SEAMLESS PIPES BE × 6MTR	DN15	3.2	48	M
4	P265GH/1.0425	SEAMLESS PIPES BE × 6MTR	DN20	3.0	6	M
5	P265GH/1.0425	SEAMLESS PIPES BE × 6MTR	DN250	6.3	216	M
6	P265GH/1.0425	SEAMLESS PIPES BE × 6MTR	DN150	5.0	294	M
7	P265GH/1.0425	SEAMLESS PIPES BE × 6MTR	DN300	6.0	102	M
8	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN15	2.0	486	M
9	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN20	3.0	18	M
10	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN80	4.0	396	M
11	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN125	4.0	318	M
12	P235GH/1.0345	SEAMLESS PIPES BE × 6MTR	DN200	6.0	456	M

Dimension Inspection of European Standard Carbon Steel Tubes

Outer Diameter

Use calipers, outside micrometers, or dedicated ring gauges to ensure outer diameter tolerances comply with relevant standards.

Wall Thickness

Employ micrometers or ultrasonic thickness gauges to perform multi-point measurements along both the circumferential and longitudinal directions, verifying wall thickness uniformity and deviations.

Length Inspection

Use steel tape measures or measuring tools to verify that fixed-length or multiple-length specifications meet standards and customer requirements.

Packaging of EN10216-2 Seamless Tubes

Bundled Packaging

Steel tubes are typically bundled by identical specifications, secured with steel strapping or wire to prevent dispersion during transit. Additionally, we cover the tubes with waterproof tarps to shield them from rain or seawater exposure en route.

End Protection

Plastic caps are often fitted to pipe ends to shield them from impacts during transit that could affect customer usage. This also prevents dust, moisture, or mechanical damage from entering the tubes, maintaining cleanliness and integrity.

Surface Protection

The outer surface is coated with rust-preventive oil, black paint, or treated with a galvanized layer to enhance corrosion resistance and prevent rusting during transport.

Labeling and Identification

Each bundle of steel tubes is accompanied by a tag indicating the manufacturer, steel grade, specifications, standards, furnace number, or batch number.

Special Packaging

For export, packaging can be customized per customer requirements using wooden crates, wooden pallets, or waterproof tarps to enhance moisture resistance and impact protection, suitable for maritime or long-distance transport.

Chemical Composition Inspection

Spectral analysis of steel tubes per EN 10216-2 is a critical step for analyzing and verifying chemical composition, ensuring the pipe material meets standard requirements and customer-specified steel grades. This inspection typically employs an optical emission spectrometer (OES) or a portable spectrometer for testing.

Following production completion, we conduct spectral analysis on all products to verify that the chemical composition of the steel tubes (including C, Mn, Si, P, S, Cr, Mo, Ni, etc.) meets the requirements of EN 10216-2 and the corresponding steel grades (e.g., P235GH, 16Mo3, 13CrMo4-5, etc.). This ensures the tubes maintain reliable strength, toughness, and corrosion resistance under high-temperature and high-pressure operating conditions.

Chemical Composition of EN10216-2 Seamless Tubes

Steel grades	C% max	Si% max	Mn% max	P% max	S% max	Cr% max	Mo% max	Ni% max	Al.cał% min	Cu% max	Nb% max	Ti% max	V% max	Cr+ Cu+ Mo+ Ni% MAX
P195GH	0.13	0.35	0.7	0.025	0.02	0.3	0.08	0.3	≥ 0.020	0.3	0.01	0.04	0.02	0.7
P235GH	0.16	0.35	1,20	0.025	0.02	0.3	0.08	0.3	≥ 0.020	0.3	0.01	0.04	0.02	0.7
P265GH	0.2	0.4	1,40	0.025	0.02	0.3	0.08	0.3	≥ 0.020	0.3	0.01	0.04	0.02	0.7
16Mo3	0.12- 0.20	0.35	0.40- 0.70	0.025	0.02	0.3	0.25- 0.35	0.3	≥ 0.020	0.3	–	–	–	–
14MoV6-3	0.10- 0.15	0.15- 0.35	0.40- 0.70	0.025	0.02	0.30- 0.60	0.50- 0.70	0.3	≥ 0.020	0.3	–	0.22-0.28	–	–
13CrMo4-5	0.15	0.50- 1,00	0.30- 0.60	0.025	0.02	1,00- 1,50	0.45- 0.65	0.3	≥ 0.020	0.3	–	–	–	–
10CrMo9-10	0.10- 0.17	0.35	0.40- 0.70	0.025	0.02	0.70- 1,15	0.40- 0.60	0.3	≥ 0.020	0.3	–	–	–

Mechanical Properties of EN10216-2 Seamless Tubes

Steel grades	Mechanical properties during tensile testing in room temperature							Resilience
	Upper yield limit or yield strength Re or R0.2 for wall thickness of t min				Tensile strength Rm			Minimum energy average absorbed KVJ at the temperature of 0°C
	T≤16	16<T≤40	40<t≤60	60<T≤60		Elongation A min%		I		T
	MPa	MPa	MPa	MPa	MPa	I	t	20	0	-10	20	0
P195GH	195	–	–	–	320- 440	27	25	–	40	28	–	27
P235GH	235	225	215	–	360- 500	25	23	–	40	28	–	27
P265GH	265	255	245	–	410- 570	23	21	–	40	28	–	27
16Mo3	280	270	260	–	450- 600	22	20	40	–	–	27	–
14MoV6-3	320	320	310	–	460- 610	20	18	40	–	–	27	–
13CrMo4-5	290	290	280	–	440- 590	22	20	40	–	–	27	–
10CrMo9-10	280	280	270	–	480- 630	22	20	40	–	–	27	–

Tolerances of EN10216 Steel Tube

Tolerances on Outside Diameter and Wall Thickness

Outside Diameter D   mm	Tolerances on      D	Tolerances on T for a T/D ratio
		≤ 0,025	> 0,025	> 0,050	> 0,10
			≤ 0,050	≤ 0,10
D ≤ 219,1	± 1% or ± 0.5mm	± 12,5% or ± 0.4mm whichever is the greater
D > 219,1	whichever is the greater	± 20%	± 15%	± 12,5%	± 10% a
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

Tolerances on Inside Diameter and Wall Thickness

Tolerances on inside diameter			Tolerances on T for a T/d ratio
d	d min		≤ 0,03	> 0,03	> 0,06	> 0,12
				≤ 0,06	≤ 0,12
± 1% or ± 2 mm whichever is the greater	(+ 2% ,0)or (+ 4 mm,0)	whichever is the greater	± 20%	± 15%	± 12,5%	± 10% a

Tolerances on Exact Lengths

Length L	Tolerance on exact length
L ≤ 6000	10
	0
6000 < L ≤ 12 000	15
	0
L > 12 000	+ by agreement
	0

EN 10216-2 Seamless Tubes Features

Excellent High-Temperature Resistance: Capable of long-term stable operation under high temperatures and pressures, suitable for boilers and steam systems.

High Strength and Good Toughness: Exhibits superior mechanical properties after heat treatment, capable of withstanding complex operating conditions.

Comprehensive Specifications: Covers various outer diameters, wall thicknesses, and lengths to meet diverse engineering requirements.

Strict Standards: Manufactured to EN 10216-2 specifications, ensuring excellent interchangeability and international recognition.

Applications

Power Industry: Boiler tubes, superheater tubes, reheater tubes

Oil & Gas: High-temperature transmission pipelines

Chemical Equipment: Pressure vessels, heat exchangers

Machinery Manufacturing: High-temperature mechanical components

Metallurgical Industry: Heat-resistant equipment piping