DIN 1629 Structural Seamless Tube

DIN 1629 structural seamless pipe is a seamless steel pipe produced in accordance with German industrial standards. It is mainly used to manufacture pipelines, containers, equipment, pipe fittings and steel structures.

standard:DIN

Surface :1. Galvanized 2. Black and Color Painting

introduction

DIN 1629 standard applies to seamless round steel pipes for general purposes, mainly used in machinery manufacturing and general structural purposes.
Common material grades of DIN 1629 structural steel pipes include St37.0, St44.0, St52.0, etc.
DIN 1629 lowstructural steel pipe is widely used in the fields of petroleum, natural gas, chemical industry, electric power, construction, etc., for the manufacture of piping systems, containers, storage tanks, boilers, heat exchangers and other equipment, as well as for the construction of structural engineering such as bridges and steel structure buildings.

Data table

DIN 1629 Specification for Seamless Circular Unalloyed Steel Tubes

Material:	DIN 1629
Size	Outer Diameter	Seamless:17-914mm 3/8"-36"
	Wall Thickness	2-60mm SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80
	Length	1-12m as customer requirement
Ends	Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded andcoupling,etc.
Surface Treatment	Bare,Painting black,varnished,galvanized,anti-corrosion 3PE PP/EP/FBE coating
Technical Methods	Hot-rolled/Cold-drawn/Hot-expanded

Chemical composition:

Steel Grade		Type of deoxidization (R, killed (including semi-killed)) (RR,fully killed)	Chemical Composition, % by mass
Symbol	Material Number		C	P	S	N¹)	Addition of nitrogen fixing elements (e.g.not less than 0,020% Al total
St37.0	1.0254	R	0.17	0.040	0.040	0.009²)	-
St44.0	1.0255	R	0.21	0.040	0.040	0.009²)	-
St52.0³)	1.0421	RR	0.22	0.040	0.035	-	Yes

Mechanical properties:

Steel Grade		Upper Yield Stress ReH for wall thickness, in mm,			Tensile strength Rm N/mm²	Elongation(%) A5
Symbol	Material Number	up to 16	over 16 up to 40	over 40 up to 65	Tensile strength Rm N/mm²	Longitudinal	Transverse
St 37.0	1.0254	235	225	216	350²) to 480	25	23
St 44.0	1.0256	275¹)	265¹)	255¹)	420²) to 550	21	19
St 52.0	1.0421	355	345	335	500²) to 650	21	19

company advantage

Why Choose GNEE

GNEE has been specialized in producing steel pipes for more than 16 years and has rich experience. The factory has professional technicians and engineers, professional testing equipment, and rich delivery experience.
We have cooperative customers for more than 10 years. For common sizes, we have stocks, so we can deliver quickly. Guarantee the quality and quantity of the products and guarantee the delivery time. The annual steel pipe output is 300,000 tons
If you would like to know more about our company or our products, please feel free to contact us.