7/14/2019 Chinese Standards on Steel Materials

http://slidepdf.com/reader/full/chinese-standards-on-steel-materials 1/3

7/23/13 Chinese standards on steel materials

xpc-company.com/index.php?nav&article=407 1/3

+852-81702990

 About Us

For Buyers

Products

Chinesestandards onsteel materials

Quality

Delivery

Request for Quote For Suppliers Contact Us

Chinese standards on steel materials

GB standards for steel materials

This group of Chinese (GB) standard specifications covers carbon and alloy steel plates and forgings used in boilers and

pressure vess els, high-strength low-alloy steels, heat-treatable steels, hot and cold-rolled plates for cold forming, steels for concrete reinforcement and prestress ed concrete and the properties for railway service rails and accessories. Standards for 

various types of steel pipe which specify requirements for high-temperature service, ordinary use, and s pecial applications s uchas fire protection use, are also presented. Specifications for steel tubes lis t standard requirements for boiler and s uperheater 

tubes, general s ervice tubes, s till tubes in refinery service, heat exchanger and condenser tubes , mechanical and structural

tubing. Steel casting s pecifications call out the s tandard properties for press ure purposes.

Group of standards for structural and constructional steels

GB 699-88 Quality carbon steels

GB 700-88 Carbon steels

GB 701-91 Hot-rolled carbon steel wire rods

GB 713-86 Plates for boilers

GB 1222-84 Spring steels

GB 1300-77 Welding filler materials for carbon and alloy steels

GB 1499-84 Reinforcing bars for concrete

GB 1591-88 Low alloy structura l steels

GB 2517-81 Sheets and str ips for structure

GB 3077-88 Alloy s teels

GB 3203-82 Bear ing steels for case hardening

GB 3273-89 Plates for automobile structura l uses

GB 3275-91 Hot-rol led quali ty carbon steel plates

GB 3423-82 Drill tubes

GB 3522-83 Cold rol led carbon steel str ips

GB 3530-83 Steel s tri p for springs

GB 3531-83 Plates for pressure vessels for low temperature service

GB 4171-84 Superior weathering s tee ls

GB 4172-84 Atmospheric corrosion-resisting steels for welded structure

GB 4358-84 Piano wire

GB 4360-84 Spring steel wireGB 4463-84 Prestressed concre te s teel

GB 5067-85 Alloy s teel s heets

GB 5216-85 Structural steels with specified hardenability bands

GB 5218-85 Al loy steel wires for springs

GB 5220-85 Valve s pring wire

GB 5221-85 Valve s pring wire

GB 5310-85 Seamless steel tubes for high pressure boiler 

GB 5676-85 Carbon cas t s teels

GB 5680-85 High manganese cast s teel s

GB 5953-86 Carbon steels wi res for cold heading

GB 5954-86 Al loy steel wi res for cold heading

GB 6478-86 Steels fo r cold heading

GB 6479-86 Seamless steel tubes for equipment of chemical industry for high pressure service

GB 6653-86 Sheets for welded gas cyl inders

GB 6654-86 Plates fo r p ressure vessels

GB 7101-91 Hot-rol led quality carbon steel sheets and strips

GB 8162-87 Seam les s s teel tubes

GB 8163-87 Seam les s s teel pipes

GB 8731-88 Free cutting steels

 

more↗14.09.2012

more↗03.04.2012

more↗02.03.2012

Company News

Shandong’s Steel ProductionCapacity to Increase

Shandong completes $1.5bnTonkolili investment

We're glad to welcome you onour new site!

SEARCH PAGES VIEWED

Main

Tenders

Documentation

SITE MAP

7/14/2019 Chinese Standards on Steel Materials

http://slidepdf.com/reader/full/chinese-standards-on-steel-materials 2/3

7/14/2019 Chinese Standards on Steel Materials

http://slidepdf.com/reader/full/chinese-standards-on-steel-materials 3/3

7/23/13 Chinese standards on steel materials

xpc-company.com/index.php?nav&article=407 3/3

http://xpc-company.com© 2012 Copyright Made in — «3Dsite-today.ru»

Points from the chemical compos ition, low carbon steel grades Q195, Q215, Q235, Q255 and Q275 grade large carbon content,

the higher the m anganese content, the more s table its plas ticity. Mechanical properties of the points from the above that thethickness of ≤ 16mm grade yield point of steel. Its tensile strength, respectively :315-430 ,335-450 ,375-500 ,410-550 ,490-630

(obN/mm2); qi its elongation rates were: 33,31,26,24,20 ( 0.5%).

The material Q235A and Q235B What's the difference?

Q235A and Q235B steel all are carbon steel. In the national standard GB700-88 in the material of the Q235A and Q235Bdistinction mainly carbon steel, the material for the carbon content of the material Q235A at between 0.14-0.22%; Q235B the

impact of the material do not do experiments, but Regular temperature impact test, V-notch. Relatively speaking, made of Q235B

steel is much better than the mechanical properties of materials for the Q235A steel. In general, steel profiles in the finished

product prior to shipment are m ade in the identification card on the logo. Us ers can determine their identity cards on the materialis Q235A, or Q235B, or other materials.

 

Cold Rolled Steel Strip: Q195, Q215, Q235 Chemical Com position and Mechanical Properties refer to the table:

 

Chemical Composition % Mechanical Properties

SteelBrand

C Si Mn P SElongation

%

YieldStrength

Mpa

TensileStrength

Mpa

Q1950.06-0.12

<=0.300.25-0.50

<=0.045 <=0.050 >=33 >=195 315-430

Q2150.09-0.15

<=0.300.25-0.55

<=0.045 <=0.050 >=31 >=215 335-450

Q2350.14-0.22

<=0.300.30-0.65

<=0.045 <=0.050 >=26 >=235 375-500