DIN EN 10210 Structural Pipe, Chemical Compositon and Mechanical Properties
March 3, 2018
Size and Weight of Seamless Roll Steel Pipe Schedule,ASME B36.10M-1996
March 8, 2018

HIGH PRECISION & PRESSURE PIPE _ FUEL PIPE SERIES

Synopsis of process flow:

Using high quality raw material: ST35,ST37 ST37.4 ST52.4, cold drawn, anaerobic bright heat treatment, nondestructive examination.

Applicable standard:

IS08535-1 (steel tubes for high pressure fuel pipe in compression ignition engine), IS00404-1992 (technical requirements for steel and steel product), IS06892-1984 (tensile testing for metal).

Main feasure:

High precision, excellent brightness, after heat treatment, steel tube inside and outside wall have no oxide layer, high cleanness inner surface, flushing the inner diameter, anti-rust oil painted. Total impurity<1.5mg/g. Maximun granule 8 degree(^0.2mm). Under high pressure, no deformation after cold bending, the complicated geometrical forming and machining can be realized. Color of the tube: gray with white. The tolerance for OD and ID: ±0.05mm,high inner surface quality level for Q. Normal working pressure is 2000 kg, and test pressure reached 6000 kg without deformation. Steel tube around a circle and its outer diameter of the same diameter rod cold bending 180 °, the surface is smooth, no cracks.

Main application:

For high pressure fuel pipe in compression ignition engine, all technical requirements can reach the level of top international brand, and they are able to replace the imported tubes and reduce the cost for our customers.

high precision steel pipe cold drawn seamless tube for diesel engine

SPECIFICATION LIST

Standard & Material

Carbon Steel

ASTM A519 Standard

MT1010, MT1020, 1008, 1010, 1018, 1020, 1025, 1030, 1045, 1518

JIS G3445 Standard

STKM11A  STKM12A  STKM12B  STKM12C   STKM13A  STKM13B   STKM13C   STKM14A  STKM14B  STKM14C  STKM15A  STKM15C   STKM16A  STKM16C   STKM17A   STKM17C  STKM18A  STKM18B  STKM18C   STKM19A  STKM19C  STKM20A

JIS G3473 Standard

STC370, STC440, STC510A, STC510, STC540, STC590A, STC590B

DIN 2391 Standard

St 35, St45, St52

EN 10297-1 Standard

E235, E275, E315, E355, E470

EN 10305-1 Standard

E215, E235, E355

EN 10305-4 Standard

E215, E235, E355

BS 6323-3 Standard

HFS 3, HFS 4, HFS 5, HFS 8

NF A49-311

TU 37-b, TU 52-b, TU 56-b, TU XC35

Alloy Steel

ASTM A519 Standard

1345, 3140, 4130, 4135, 4140, 4150, 4320, 4340, 5120, 5130

JIS G3429 Standard

STH11, 12 STH21, 122 STH31

JIS G3441 Standard

SCR420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM440TK

Stainless Steel

ASTM A511 Standard

 MT304, MT304L, MT310S, MT316, MT316L, MT317, MT321, MT347,   MT403, MT410, MT431

ISO Standard

NACE MR-0175

Size

 

Size Range

Tolerance

OD

6-325mm

-0.035 — +0.045mm

ID

2-250mm

±0.035mm

WT

1-32mm

depends on sizes

Length

 random or fixed length

+0-3.5mm

Straightness

0.15:1000, 0.4:1000, 0.5:1000 1:1000 or customized

Surface Roughness

Ra 0.02—0.4μm

Application

1. Automotive and mechanical pipes

2. Petroleum cracking pipes

3. High Pressure Boiler Pipe

4. Low and middle pressure fluid transportation pipeline

5. Chemical fertilizer equipment pipes

6. Heat exchanger pipes

high precision steel pipe cold drawn seamless tube for diesel engine

Production equipment

S45 seamless medium carbon high precision cold drawn steel pipe

 

1. COId Drawn Machine Cold drawing machine as the main processing
equipment of cold drawn steel tube, it is the
production of small, precise and thin wall, high
mechanical properties of pipe of the main
processing equipment.

2. High oressure washing Dlatform
High pressure washing platform is
used for out and inner surface
cleaning.

3. Anaerobic annealing lurance
Annealing is a kind of metal heatina treat-
ment process, refers to the metal slowly
heated to a certain temperature, keep en-
ough time, and then cooling at appropriate
rate. The purpose is to reduce the hardness
and improve cutting machining,eliminate
the residual stress, stable size, reduce the
deformation and crack tendency,fine grains,
adjust, eliminate defects.

4. Straightening Machine
Straightening machine is the equipment
which be used for steel pipe straightening;
After straightening steel pipe surface no
indentation, necking phenomenon, better
than the standards set by the Ministry of
construction.

5. Polishing Machine
Polishing machine is used for polishing,
derusting, dusting, descaling; make the
surface of steel pipe bright.

 

Testing equipment :

1. Chemical analysis instruments
Chemical analyzer is mainly used in
measurement ot element com
positon  in steel fiel Accurate anal n
detection o alloy elements xnä hoy
identification.

2. Optical spectrum analyzes
Used in the detection of steel pipe’s
quality

3. Eddy current detector
Eddv current detector is used for
testina that steel pipe whether have
defecrs.

4. Mechanical tester
Used for testing steel pipe’s physical and
mechanical properties.

5. ROCkwelI hardness tester
Rockwell hardness tester used to test
the hardness of steel pipe surface.

 

APPLICATIONS:

 

THE PRODUCTION PROCESS:

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