Main Specification:

ASTM A213 ASTM A269 ASTM A312 ASTM A511 DIN 17456 DIN17458 EN10216-5 JIS3446 JIS3459 JIS3463

Steel Grade：

304 304L 304H 316 316L 317 317L 321 347

Size:

OD: 4 – 200 mm WT: 0.5 – 20 mm

The Maximum Length: 35 m

Main Characteristics:

High cleanness and high precision of inside and outside surface, good mechanical properties, excellent cold bending ability. high temperature resistant and antioxidation Good corrosion-resistance in alkali. sea and various acids. We can make the process of bright heat treatment and polishing according to the customers’ requirements. Polishing range: 150-635 grids.

Main Norm:

DIN2391-94/C DIN1630 EN10305 DIN2445 ASTM A179 SAE J524 JIS G3454

Main Steel Grade:

ST35/E235 ST37.4 ST45/E255 ST52/E355

Delivery Condition:

NBK(+N) BK(+C) GBK(+A) BKW(+LC) BKS(+SR)

Synopsis of Process Routing:

High quality carbon steel, cold rolled, bright heat treatment without oxidization (NBK status), nondestructive testing. The inner wall of the steel tube is washed with special equipment and washed under high pressure, antirust oiling outside surface, plastic capping on both ends.

Main Features:

Inner and outer walls of tube have high accuracy, excellent brightness, no oxidization after heat treatment and high cleanness inside tube. The steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening. The complicated geometrical forming and machining can be realized. Color of tube: bright white, with high metallic luster.

Main Application:

Used in automotive industry and in the occasion where the high accuracy, brightness. cleanness of the tube are required.

Main Norm:

DIN2391-94/C DIN1630 EN10305 DIN2445 ASTM A179 SAE J524 JIS G3454

Main Steel Grade:

ST35/E235 ST37.4 ST45/E255 ST52/E355

Delivery Condition:

NBK(+N) BK(+C) GBK(+A) BKW(+LC) BKS(+SR)

Synopsis of Process Routing:

High accurate, cold drawn and bright seamless steel tube, the outer wall of tube is electroplated. The caps are covered at two ends of tube to prevent from the dust.

Main Features:

White galvanized, color galvanized (yellow galvanized). The outer wall of tube has good property for antirust and anticorrosion. Note: Length for galvanized steel tube should be within 6 Meters.

Main Application:

Used in hydraulic system, in the occasion where the requirement for antirust and anticorrosion of outer wall is relatively high.

Main Norm:

DIN2391-94/C DIN1630 EN10305 DIN2445 ASTM A179 SAE J524 JIS G3454

Main Steel Grade:

ST35/E235 ST37.4 ST45/E255 ST52/E355

Delivery Condition:

NBK(+N) BK(+C) GBK(+A) BKW(+LC) BKS(+SR)

Synopsis of Process Routing:

High accurate, cold drawn and bright seamless steel tube, with imported environmental protection phosphating liquid for the inner and outer wall of the steel tube and forming a black phosphating protective film. The antirust oil is absorbed by means of the micropore on the film to prevent from the rust. The caps are covered at two ends of tube to prevent from the dust.

Main Features:

Black with bright, high color uniformity on the surface of steel tube, strong consistency, beautiful appearance, good anti-rust performance.

Main Application:

Used in hydraulic system and construction machinery. This tube is our main product for export business.

Main Norm:

DIN2391-94/C DIN1630 EN10305 DIN2445 ASTMA179 SAE J524 JIS G3454

Main Steel Grade:

ST35/E235 ST37.4 ST45/E255 ST52/E355

Delivery Condition:

NBK(+N) BK(+C) GBK(+A) BKW(+LC) BKS(+SR)

Synopsis of Process Routing:

High quality carbon steel, cold drawn, bright heat treatment without oxidization (NBK status)，nondestructive testing, The inner wall of the steel tube is washed with special equipment and washed under high pressure, antirust oiling outside surface, plastic capping on both ends.

Main Features:

High accuracy, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness inside wall. The steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening. The complicated geometrical forming and machining can be realized Color of tube: gray with white.

Main Application:

Used in hydraulic system, automobile and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.