DIN2391-2c St37.4 Nbk Precision Seamless Steel Tube for Hydraulic Application

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Bright, Black Phosphated, Galvanizing
• Usage: Hydraulic/Automobile Pipe
• Section Shape: Round
• Standard: DIN 2391, En10305-1, En10305-4, BS 6323, ISO 8535
• Delivery Condition: Bk, Gbk, Bkw, Bks or Nbk
• Steel Grade: St35, St37, St37.4, E235, E355, St45, St52.4,etc
• Certificate: ISO 9001 Ts16949
• Secondary or Not: Non-Secondary
• Application: Automotive Industry, Hydraulic System, Other Indus
• Transport Package: Plywood Box or Budles
• Specification: OD2mm -60mm
• Trademark: CW
• Origin: China
• HS Code: 7304319000

Product Description

DIN2391-2C ST37.4 NBK precision seamless steel tube for hydraulic application
High Precision Seamless Steel Tube for Automotive Industry and Hydraulic Application

 

Standard	Material Chemical Composition (%)									Tensile strength Rm (Mpa)	Yield Strength Reh (Mpa) Min	A Elongation(%) Min
	Steel Grade	Material Number	C	Si	Mn	P	S	Cr	Mo
DIN1629	ST37	1.0254	≤ 0.17	≤ 0.55	≤1.60	≤0.04	≤0.04	-	-	350-480	235	25
	ST44	1.0258	≤ 0.21	≤ 0.55	≤1.60	≤0.04	≤0.04	-	-	420-550	275	21
	ST52	1.0421	≤  0.22	≤ 0.55	≤1.60	≤0.04	≤0.035	-	-	550-650	355	22
DIN1630	ST37.4	1.0255	≤ 0.17	≤ 0.35	≥0.035	≤0.04	≤0.04	-	-	350-480	235	25
	ST44.4	1.0257	≤ 0.21	≤ 0.35	≥0.04	≤0.04	≤0.04	-	-	420-550	275	21
	ST52.4	1.0281	≤ 0.22	≤ 0.55	≤1.60	≤0.04	≤0.035	-	-	550-650	355	22

	Material Chemical Composition (%)
Standard	Steel Grade	Material Number	C	Si	Mn	P	S	Cr	Mo
DIN 2391	ST35	1.0308	<= 0.17	<= 0.35	>=0.04	<=0.025	<=0.025	-	-
	ST45	1.0408	<= 0.21	<= 0.35	>=0.04	<=0.025	<=0.025	-	-
	ST52	1.058	<= 0.22	<= 0.55	<=1.60	<=0.025	<=0.025	-	-
	BK		BKW		BKS			GBK
Steel Grade	Rm Tensile Strength  (Mpa) Min	A Elongation(%) Min	Rm Tensile Strength (Mpa) Min	A Elongation(%) Min	Rm Tensile Strength (Mpa) Min	Rel Yield Strength(Mpa) Min	A             Elongation  (%) Min	Rm Tensile Strength (Mpa)Min	A Elongation (%)Min
ST35	480	6	420	10	420	315	14	315	25
ST45	580	5	520	8	520	375	12	390	21
ST52	640	4	580	7	580	420	10	490	22

Standard	Steel Grade	Material Number	C	Si	Mn	P	S	Cr	Mo
EN10305-1 EN10305-4	E235	1.0308	<= 0.17	<= 0.35	>=0.04	<=0.025	<=0.025	-	-
	E255	1.0408	<= 0.21	<= 0.35	>=0.04	<=0.025	<=0.025	-	-
	E355	1.058	<= 0.22	<= 0.55	<=1.60	<=0.025	<=0.025	-	-

Steel Grade	(+C)		(+LC)		(+SR)			(+A)		(+N)
	Rm Tensile Strength  (Mpa) Min	A Elongation(%) Min	Rm Tensile Strength (Mpa) Min	A Elongation(%) Min	Rm Tensile Strength (Mpa) Min	Rel Yield Strength(Mpa) Min	A             Elongation  (%) Min	Rm Tensile Strength (Mpa)Min	A Elongation (%)Min	Rm Tensile Strength (Mpa)	Rel Yield Strength  (Mpa) Min	A Elongation (%) Min
E235	480	6	420	10	420	350	16	315	25	340-480	235	25
E255	580	5	520	8	520	375	12	390	21	440-570	255	21
E355	640	4	580	7	580	450	10	450	22	490-630	355	22

 

Packaging & Shipping

Company Profile

Chewit international Located in zhangjiagang city which is along The Yangtze Golden Channel the junction of River and Coast Economic Belt. It owns an excellent geographic position, as it is close to Nanjing city in the north, adjacent to Suzhou and Wuxi cities in the south, next to Shanghai international city in the east. Zhangjiagang international port and State highway endow us a convenient water and land transportation which links us to the outside world both home and aboard. Chewit International is one group company with two manufactures one is producing steel forgings for Marine, Power, Boiler, Ocean, Oil, Petrochemical, Mechanical and Hydraulic fields and the other is producing precision steel tubes for automotive industry and hydraulic system and also one semi-independent company specially for import and export business. We have a total area of 150000 square meters with the employees over 200 people. All the products well produced by our mills need to be double inspected by chewit professional quality controller and then we will offer our customer the vivid report for the tested items. Only those products which are inspected well can be allowed to delivery to our customers. By the means of strict inspection, we wined a lot of customer for long term business both home and abroad. We adhere to our company tenet Customer First, Quality formost and always try our best to serve our customer with our full heart.