Seamless cold drawn Steel hydraulic tubes

1000.0~3000.0 USD

Min. Order:	500 Meter
Payment Terms:	L/C, D/P, D/A, T/T
Supply Ability:	500Ton/ Month
Place of Origin:	Jiangsu

Company Profile

Zhangjiagang Renaissance High-precision Steel Tube Co., Ltd

Location:	Suzhou, Jiangsu, China (Mainland)
Business Type:	Manufacturer
Main Products:	Hydraulic Fluid Line Tube, Phosphated Metric Steel Tube, BA Steel Tube, Zinc Coated Steel Tube, High Pressure Oil Tube

Product Detail

Means of Transport:	Ocean, Air, Land
EN:	DIN2391/C
DIN:	DIN2391 part 2
Steel Gr.:	St37, St45, St52
Condition:	NBK, Normalizing
Surface treatment:	Black Phosphated, oiled
Ends:	capped
Name:	Seamless cold drawn Steel hydraulic tubes
Packing:	wooden case
Using:	hydraulic line service
Production Capacity:	500Ton/ Month
Packing:	Wooden case or as per requirement
Delivery Date:	15working days

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Product Description

Seamless cold drawn Steel hydraulic tubes

Titles of standards

ASTM A519 Seamless carbon and alloy steel mechanical tubing

DIN 2391 1 Seamless precision steel tubes with special dimen-

sional accuracy. Dimensions

DIN 2391 2 Seamless precision steel tubes with special dimen-

sional accuracy. TDR

BS 6323 1, 4 Seamless and welded steel tubes for automobile,

mechanical and general engineering purposes

Part 1. General requirements

Part 4. Specific requirements for cold finished seam-

less steel tubes

EN 10305-1 Steel tubes for precision applications. TDR

Part 1. Seamless cold drawn tubes

GOST 8734 Seamless steel tubes cold deformed. Range

JIS G 3445 Carbon steel tubes for machine structural purposes

Dimensions

Tubes shall be ordered:

1. by outside diameter and inside diameter

2. by outside diameter and wall thickness

Tolerances

1. Values according to standards

out of roundness is included in the tolerances of diameter

tolerances of the wall thickness is ±10%

eccentricity is included in the tolerances of wall thickness

2. Tolerances by agreement

3. Dimensions and tolerances according to standard ASTM A450

Kinds of lengths (current deliveries):

production 3-8 m

fixed ±500 mm

precise tolerances 0 + x mm (x = by agreement)

max. length = 12 m

conversion: 1 m = 3,2808 ft

1 ft = 0,3048 m

Straightness

1/1000mm

Steel grades

Steel is produced in electric arc furnace and is fully killed. Steel grades are shown in the survey table of standards and in the table of chemical composition and mechanical properties (values are informativeonly).

Delivery conditions and heat treatment

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

Surface condition

Tube surface corresponds to the standards and depends on the method of tube manufacturing and method of heat treatment.

Value of roughness Ra < 4 µm.

Tube ends

The tubes are delivered with plain ends without burrs at the ends of the tube. The tube with wall thickness over 3(5) mm could be delivered with bevelled ends according to corresponding standards.

Upon request ends could be plugged with plastic caps.

Testing

Testing is performed in accordance with corresponding standards.

Selection of test according to standards or by agreement (non specific or specific inspection).

Non specific inspection

Mandatory test

cast analysis

tensile test

visual examination

dimensional testing

Specific inspection Inspection certificate 3.1.B

Optional tests

flattening test or drift expanding test

roughness measurement

NDT for detection of transverse imperfections 1)

NDT for detection of wall imperfections 2)

1. Selection of tests

eddy current test according to standards ÈSN 01 5054, PRP 02-74, ASTM E 309, EN 10246-3 Class E3 for D > 6 mm, t > 0,5 mm

flux leakage test according to standards ÈSN 01 5047, ISO 9402 (SEP 1913), ASTM E 570, EN 10246-5 Class F3 for D > 32 mm, t > 2 mm

ultrasonic test according to standards ÈSN 01 5028, SEP 1915, ASTM E 213, EN 10246-7 Class U3 for D > 10 mm, t > 2 mm

2. EN 10246-1 eddy current, electromagnetic test

Marking

Bundles are markerd with one or more metal or other durable tags

with required information.

Protective coating

Tubes are supplied either uncoated or with the manufacturers standard mill coating at the option of the customer (subject of agreement between customer and manufacturer).

Packaging

Tubes are packed in round or hexagonal bundles with weight max.2000 kg. Other possibilities by agreement.

Types of inspection documents according to EN 10204 (survey)

Non specific inspection

2.1 Certificate of compliance with the order (certificate from manufacturer)

2.2 Test report (certificate from manufacturer)

Specific inspection

2.3 Specific test report (certificate from manufacturer)

3.1.B Inspection certificate (inspector representing the manufacturer)

Seamless cold drawn Steel hydraulic tubes