DIN 1629 carbon seamless steel pipes

DIN 1629 is the standard specifies the Seamless Circular Tubes of Non Alloys Steels with Special Quality Requirements.

DIN 1629 applications the overheated boilers, as minimum thickness ferrite and seamless steel pipes, and as heat exchangers via austenitic pipes.

The main products of steel / steel grade:

• DIN1629 ST37.0
• DIN1629 ST44.0
• DIN1629 ST52.0

Standards: API 5L, ASTM A53/A106, DIN1629, JIS G3454, JIS3466
Materials: API 5l x42, x46, x52, x62, A53GRB, A106GRB
Shape: round
Sizes:
1. Outer diameter: 1/2-48″
2. Thickness: 2-50mm
3. Length: 1-12m or customized

• German standard chemical society (DIN) is Germany’s largest representative of the public welfare of the standardization of non-governmental organizations.

  Usage	Japan		USA	Germany	China
  Carbon steel tubes for boiler and   heat exchanger	JIS G3461	STB340	ASTM A179	DIN 17175 ST35.8	GB6479 10#
  		(STB35)	A192
  		STB410	ASTM A178 C	DIN 17175 ST45.8	GB5310 20G
  		(STB42)	A210 A1		GB6479 20G
  		STB510	ASTM A210 C	DIN 17175 19Mn5
  Alloy tube for boiler heat exchanger	JIS G3462	STBA20	ASTM A213 T2		GB9948 GB5310 GB6479 12CrMo
  		STBA22	ASTM A213 T12	DIN 17175 13CrMo44	GB9948 GB5310 GB6479 15CrMo
  		STBA23	ASTM A213 T11
  			A199 T11
  		STBA24	ASTM A213 T22	DIN 17175 10CrMo910	GB5310 12Cr2Mo
  			A199 T22		GB6479 12Cr2Mo
  		STBA25	ASTM A213 T5	DIN 17175 12CrMo195	GB9948 1Cr5Mo
  			A199 T5		GB6479 1Cr5Mo
  		STBA26	ASTM A213 T9	DIN 17175 X12CrMo91
  			A199 T9
  Steel tube high pressure boiler tube for heating furnace	JIS G3467	STFA410			GB9948 20#
  		STFA23	ASTM A200 T11
  		STFA24	ASTM A200 T22
  		STFA25	ASTM A200 T5		GB9948 1Cr5Mo
  		STFA26	ASTM A200 T9
  General   carbon steel pipe for pressure pipe	JIS G3454	STPG370	ASTM A53A	DIN 1629 ST35	GB8163 10#
  		(STPG38)
  		STPG410	ASTM A53B	DIN 1629 ST45	GB8163 20#
  		(STPG42)
  High temperature carbon steel pipe	JIS G3456	STPT370	ASTM A106A	DIN 17175 ST35.8	GB6479 10#
  		(STPT38)			GB9948 10#
  		STPT410	ASTM A106B	DIN 17175 ST45.8	GB5310 20G
  		(STPT42)			GB6479 20G
  		STPT480	ASTM A106C
  		(STPT49)
  Petroleum casing pipe for alloy steel pipe for pipeline	JIS G3458	STPA20	ASTM A335 P2		GB9948 GB6479 12CrMo
  		STPA22	ASTM A335 P12	DIN 17175 13CrMo44	GB9948 15CrMo
  		STPA23	ASTM A335 P11
  		STPA24	ASTM A335 P22	DIN 17175 10CrMo910	GB5310 12Cr2Mo
  					GB6479   12Cr2Mo
  		STPA25	ASTM A335 P5	DIN 17175 12CrMo195	GB9948 GB6479 1Cr5Mo
  		STPA26	ASTM A335 P9	DIN 17175 X12CrMo91

  Chemical Compositions(%) of DIN1629

  Grade	C	Si	Mn	P	S
  ST37.0	≤0.17	/	/	≤0.040	≤0.040
  ST44.0	≤0.21	/	/	≤0.040	≤0.040
  ST52.0	≤0.22	≤0.55	≤1.70	≤0.040	≤0.035

  Mechanical Properties of DIN1629

  Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)L	Elongation (%)T
  ST37.0	≥235	350-480	25	23
  ST44.0	≥275	420-550	21	19
  ST52.0	≥355	500-650	21	19

Application:

It is used for manufacturing pipeline,vessel,equipment,pipe fittings.

Packing:
1. Big OD: in bulk
2. Small OD: packed by steel strips
3. Each in PVC bags
4. Bundled with knitted plastic bags
5. Wooden cases