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Features

Specifications

Application: E235 N Steel Tube For Auto Industry And Hydraulic System, Automobile Fuel Line, Oil Tube,

Alloy Or Not: Non-Alloy

Section Shape: Round, Round

Special Pipe: EN Pipe

Outer Diameter: 3.75 - 60 Mm, 3.75 - 60 Mm

Thickness: 0.5 - 6 Mm

Standard: ASTM, Bs, DIN, GB, JIS, ASTM A179-1990, BS 6323, DIN 1629/3, DIN EN 10216-1-2004, DIN 1630, DIN 2391, DIN 17175, DIN EN 10305, DIN 2448, GB/T 8163-1999, GB/T 8162-1999, GB/T 3639-2000, JIS G3445-2006

Grade: 10#, 20#, 45#, 16mn, ST37, ST52, ST45, ST35.8, St37-2, ST35.4, St52.4, St45-4, ST35, ST37.4, ST54, 10#-45#, 16mn, ST35-ST52

Surface Treatment: Annealed Galvanized, Or Black Phosphated E235 N Cold Drawn Seamless

Tolerance: Â±5%

Processing Service: Cutting

Name: E235 N Cold Drawn Seamless Steel Pipe

Standard:: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535

STEEL GRADE:: ST30Si, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, Etc

Delivery Condition:: BK, GBK, BKW, BKS Or NBK For E235 N Cold Drawn Seamless Steel Pipe

Certificate:: ISO 9001 TS16949

Technique: Cold Drawn, Cold Drawn

Secondary Or Not: Non-secondary

Certification: TS16949 ISO9001 For E235 N Cold Drawn Seamless Steel Pipe

Type: Seamless Steel Pipe

Basic Infomation

Certification: ISO 9001 TS16949, TS16949 ISO9001 for e235 n cold drawn seamless steel pipe

Payment & Shipping Terms

Packaging Details: e235 n cold drawn seamless steel pipe sea worthy packing in bundles or boxes

Supply Ability: 1000 Ton/Tons per Month e235 n cold drawn seamless steel pipe

Product Description

e235 n cold drawn seamless steel pipe

Standard: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535, BS3602

STEEL GRADE: ST35, ST37, ST37.4, ST45, ST52, ST52.4, etc

Standard Tubes
Standards	TDR Standards	Steel Grades
DIN	1629 1630 2391-2	ST 37 / 44 / 52 ST 37.4 / 44.4 / 52.4 ST 35 / 45 / 52
GB/T	8162 8163 3639	10#, 20#, 16Mn
EN	10305-1 10305-4	E215/235/355/255 E215/235/355/255
ASTM	A822-A450	A822
ISO	8535	ST 35 / 45 / 52
ASTM	A179-A450	A179
BS	BS 3602	CFS 360
BS	BS 6323	CFS3 CFS4

DELIVERY CONDITIONS

The tubes can be produced in the following delivery conditions:

BK (+C) Cold finished/hard (cold finished as drawn).

No heat treatment after the last cold forming process.

BKW (+LC) Cold finished/soft (lightly cold worked)

After the last heat treatment there is a light finishing pass (cold drawing).

BKS (+SR) Cold finished/stress relieve annealed.

After the final cold forming process the tubes are stress relieve annealed.

GBK (+A) Annealed.

After the final cold forming process the tubes are annealed in a controlled atmosphere.

NBK (+N) Normalized. (Mainly focus on)

After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.

2 SURFACE TREATMENTS

1. Bare Tube (No coating): Bright and smooth, Surface Roughness both inner and outer surface 0.2Ra Maximum for special requirement

2. Surface Coating

A. Silver galvanized

B. Yellow galvanized

C. Olive green coated

Layer thickness: 8-20um, Salty Spray Test: 48-150 hours

3. Black phosphate

3 APPLICATIONS

1. Automotive fields

A. Fuel injection lines/nozzles

B. CNG (Compressed Nature Gas) tube-- Burst pressure: 1307Bar, Working Pressure: around 350bar

C. Drive transmission: Steering column elements

D. Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts

2. Hydraulic Fields

A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension

B. Hydraulic cylinders (HPZ)

Chemical and Mechanical performance:

Table 1- Chemical composition
Steel Grade	C%	Si%	Mn%	P%	S%	AL%
St30Al or E215	≤0.10	≤0.05	≤0.7	≤0.025	≤0.025	≥0.025
St35 or E235	≤0.17	≤0.35	0.4-1.2	≤0.025	≤0.025
St45 or E255	≤0.21	≤0.35	0.4-1.1	≤0.025	≤0.025
St52 or E355	≤0.22	≤0.55	≤1.6	≤0.025	≤0.025

	Table 2 - Mechanical properties at room temperature
Delivery condition	BK		BKW		GBK		NBK (N)
steel Grade	Rm Mpa (Min)	A %(Min)	Rm Mpa(Min)	A %(Min)	Rm Mpa(Min)	A %(Min)	Rm Mpa(Min)	ReH Mpa(Min)	A %(Min)
St30Al or E215	430	8	380	12	280	30	290 to 430	215	30
St35 or E235	480	6	420	10	315	25	340 to 480	235	25
St45 or E255	580	5	520	8	390	21	440 to 570	255	21
St52 or E355	640	4	580	7	450	22	490 to 630	355	22

Some samples of related steel grade
GB	TOCT	ASTM	BS	JIS	NF	DIN
10F		1010	040A10		XC10
10	10	10,101,012	045M10	S10C	XC10	C10,CK10
20	20	1020	050A20	S20C	XC18	C22,CK22
45	45	1045	080M46	S45C	XC45	C45,CK45
30CrMo	30XM	4130	1717COS110	SCM420	30CD4
42CrMo		4140	708A42		42CD4	42CrMo4
			708M40
35CrMo	35XM	4135	708A37	SCM3	35CD4	34CrMo4

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