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En10305-1 E235 N Bright Annealing Hydraulic Seamless Steel Tube

  • Carbon Steel

  • as per request

  • as per request

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Detailed Image

bright annealing

galvanized-1

SIZES AND TOLERANCE


Mechanical properties at room temperature

Delivery condition BK BKW GBK NBK
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

Description

Precision Seamless Steel Tube: Norm DIN2391 EN10305, High quality carbon precision steel tubes St35 St37.4 St52, cold drawing, bright heat treatment without oxidation (NBK status), non-destructive testing, cleaning, phosphating, anti-rust oil dipping, the application for machine tools industry, construction machinery, ship building industry hydraulic system, automotive steel tube, and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.

●DIN highly accurate, cold drawn and bright carbon steel seamless tube is used as the tube to be phosphated. The phosphated is realized with the imported chemical fluid to form a black 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.
● 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.

● The color of NBK tube is Bright Black. Color is homogeneously distributed on the tube surface. The tube has good property of antirust.

 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)

Processing

ASTM A179 Cold Drawn Seamless Carbon Steel Tube

Packaging & Shipping

Packaging workshop


Packaging is the ultimatee of product quality .we establish strict packaging quality management system to improve packaging quality of products continuously and pack products strictly in accordance with packaging standars and customer requirements.

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Zhangjiagang Chewit International Co.,ltd, is the professional supplier in china for high precision seamless steel pipe of carbon, alloy.

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Zhangjiagang City, Jiangsu Province, China
  sale@chewit.cn
  +86-512-58335585
  +86-18962244644
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