dIN 1626

DIN 1626 Steel Pipe

DIN 1626 Welded circular unalloyed steel tubes are subject to special requirements and technical delivery conditions. Manufactured with precision, these steel tubes are designed to meet the highest standards set by the Deutsches Institut für Normung e.V. (DIN), the German Institute for Standardisation. As an international trading company, UNIACERO ensures that these steel pipes are of top-notch quality, catering to the specific needs of industries worldwide. Our production process, backed by the stringent guidelines of DIN, guarantees durability, reliability, and efficiency in every product.

DIN 1626 Specification

Our DIN 1626 steel tubes come in various specifications to cater to diverse industrial requirements. The steel grades available are St 37.0, St 44.0, and St 52.0. The tubes undergo rigorous production procedures, ensuring their robustness and longevity. They are available in different surface coatings, end types, joint methods, and offer a range of machining services. Every tube is crafted with precision, ensuring they meet the highest industry standards.

Standard Name	DIN1626
Procedure	ERW		LSAW		SSAW		SMLS		–
Application	For petroleum/ natural gas pipelines, for conveying water, drainage, coal gas, mineral, slurry, and other low-middle pressure liquids. Also for the chemical industry, building, structure, heat-supply and pile-driving projects
Steel Grade	USt37.0		St37.0		St44.0		St52.0		–
Out Diameter	6-820mm
Wall Thickness	SCH10- SCH XXS
Length	5.8m 6m 12m or as customer demand
Steel Grade		Upper yield strength values for a design temperature of
		50℃		200℃		250℃		300℃
Symbol	Material Number	and a wall thickness
		≤16mm	＞16≤40mm	≤16mm	＞16≤40mm	≤16mm	＞16≤40mm	≤16mm	＞16≤40mm
		N/mm2
USt37.0	1.0253	235	–	185	–	165	–	140	–
St37.0	1.0254	235	225	185	175	165	155	140	135
St44.0	1.0256	275	265	215	205	195	185	165	160
St52.0	1.0421	355	345	245	225	225	215	195	190
Corrosion Prevention	Lacquer, Varnish, Oiling, Galvanizing
	FBE, 2LPP, 3LPP, 2LPE, 3LPE
End Processes	Square Cut, Bevelling, Threading, Grooving
Further Processing	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

DIN 1626 Dimension Table

The DIN 1626 steel tubes are available in a range of sizes. The outer dimensions range from 4.0mm to 60.0mm, with a wall thickness varying between 0.5mm to 8mm. These dimensions are meticulously maintained to ensure that the tubes fit perfectly in their intended applications, ensuring efficiency and safety.

Outside diameter mm	Nominal Thickness mm	Other Thickness, mm
Outside diameter mm	Nominal Thickness mm	1.4	1.6	1.8	2	2.3	2.6	2.9	3.2	3.6	4	4.5	5	5.6	6.3	7.1	8	8.8	10	11	12.5	14.2	16	17.5	20	22.2	25	28	30	32	36	40
10.2	1.6	●	●	●	●	●	●
13.5	1.8	●	●	●	●	●	●	●	●	●
16	1.8	●	●	●	●	●	●	●	●	●
17.2	1.8	●	●	●	●	●	●	●	●	●	●
19	2	●	●	●	●	●	●	●	●	●	●
20	2	●	●	●	●	●	●	●	●	●	●
21.3	2	●	●	●	●	●	●	●	●	●	●	●
25	2	●	●	●	●	●	●	●	●	●	●	●	●
25.4	2	●	●	●	●	●	●	●	●	●	●	●	●
26.9	2	●	●	●	●	●	●	●	●	●	●	●	●
30	2	●	●	●	●	●	●	●	●	●	●	●	●	●	●
31.8	2	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
33.7	2	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
38	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
42.4	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
44.5	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
48.3	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
51	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
54	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
57	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
60.3	2.3	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
63.5	2.3		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
70	2.6		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
73	2.6		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
76.1	2.6		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
82.5	2.6		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
88.9	2.9		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
101.6	2.9				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
108	2.9				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
114.3	3.2				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
127	3.2				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
133	3.6				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
139.7	3.6				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
152.4	4				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
159	4				●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
168.3	4							●	●	●	●	●	●	●	●	●	●	●	●	●
177.8	4.5							●	●	●	●	●	●	●	●	●	●	●	●	●
193.7	4.5							●	●	●	●	●	●	●	●	●	●	●	●	●
219.1	4.5								●	●	●	●	●	●	●	●	●	●	●	●	●
244.5	5								●	●	●	●	●	●	●	●	●	●	●	●	●
273	5								●	●	●	●	●	●	●	●	●	●	●	●	●
323.9	5.6								●	●	●	●	●	●	●	●	●	●	●	●	●
355.6	5.6								●	●	●	●	●	●	●	●	●	●	●	●	●
406.4	6.3									●	●	●	●	●	●	●	●	●	●	●	●
457	6.3									●	●	●	●	●	●	●	●	●	●	●	●
508	6.3									●	●	●	●	●	●	●	●	●	●	●	●	●	●
559	6.3											●	●	●	●	●	●	●	●	●	●	●	●	●	●
610	6.3											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
660	7.1											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
711	7.1											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
762	8											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
813	8											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
864	8.8											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
914	10											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
1016	10											●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
1220														●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
1420															●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
1620																●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
1820																		●	●	●	●	●	●	●	●	●	●	●	●	●	●	●
2020																			●	●	●	●	●	●	●	●	●	●	●	●	●	●
2220																			●	●	●	●	●	●	●	●	●	●	●	●	●	●

Chemical Requirements of DIN 1626

The chemical composition of our DIN 1626 steel tubes is strictly maintained to ensure their strength and durability. Each tube is crafted with a specific mix of elements, ensuring they can withstand varying conditions and pressures. This careful composition ensures that the tubes remain corrosion-resistant, durable, and efficient in their performance.

Chemical Composition（Cast Analysis）In % By Mass
Steel Grade		C max	Si max	Mn max	P max	S max	Cr max	Mo max	Ni max	Al min	Cu max	Nb max	Ti max	V max	Cr+Cu+Mo+Ni max
Steel Name	Steel Number	C max	Si max	Mn max	P max	S max	Cr max	Mo max	Ni max	Al min	Cu max	Nb max	Ti max	V max	Cr+Cu+Mo+Ni max
P195TR1	1.0107	0.13	0.35	0.70	0.025	0.020	0.30	0.08	0.30	–	0.30	0.010	0.04	0.02	0.70
P195TR2	1.0108	0.13	0.35	0.70	0.025	0.020	0.30	0.08	0.30	0.02	0.30	0.010	0.04	0.02	0.70
P235TR1	1.0254	0.16	0.35	1.20	0.025	0.020	0.30	0.08	0.30	–	0.30	0.010	0.04	0.02	0.70
P235TR2	1.0255	0.16	0.35	1.20	0.025	0.020	0.30	0.08	0.30	0.02	0.30	0.010	0.04	0.02	0.70
P265TR1	1.0258	0.20	0.40	1.40	0.025	0.020	0.30	0.08	0.30	–	0.30	0.010	0.04	0.02	0.70
P265TR2	1.0259	0.20	0.40	1.40	0.025	0.020	0.30	0.08	0.30	0.02	0.30	0.010	0.04	0.02	0.70

Mechanical Requirements of DIN 1626

Our DIN 1626 steel tubes are designed to meet specific mechanical requirements. They are crafted to withstand high pressures, temperatures, and stresses, ensuring their longevity and reliability. Each tube undergoes rigorous testing to ensure they meet the mechanical standards set by DIN, guaranteeing their performance in even the most demanding conditions.

Mechanical Properties
Steel Grade		Tensile Properties						Impact Properties
Steel Name	Steel Number	Upper Yield Strength ReH min.for Wall Thickness T mm			Tensile Strength Rm	Elongation A min %		MinimumAverage Absorbed Energy KV J At a Temperature of 0 ℃
		T ≤ 16	16 ＜ T ≤ 40	40 ＜ T ≤ 60	Tensile Strength Rm	Elongation A min %		l		t
		Mpa	Mpa	Mpa	Mpa	l	t	0	-10	0
P195TR1	1.0107	195	185	175	320 to 440	27	25	–	–	–
P195TR2	1.0108	195	185	175	320 to 440	27	25	40	28	27
P235TR1	1.0254	235	225	215	360 to 500	25	23	–	–	–
P235TR2	1.0255	235	225	215	360 to 500	25	23	40	28	27
P265TR1	1.0258	265	255	245	410 to 570	21	19	–	–	–
P265TR2	1.0259	265	255	245	410 to 570	21	19	40	28	27

Steel Grades in DIN 1626

The steel grades available for our DIN 1626 tubes are St 37.0, St 44.0, and St 52.0. Each grade offers unique properties, ensuring that they cater to various industrial needs. These grades are chosen based on their strength, durability, and resistance to wear and tear, ensuring that our clients receive only the best.