Different Material Quality Standard
| China | Germany | France | British | America | Korea | Japan |
| GB | DIN | NF | BS | ASTM | KS | JIS |
| GB/T700 Q195~Q235 GB/T1591 Q345~Q460 GB/T699 8~85 15Mn~70Mn | EN10025 S235JR=Q235B E275~E335 S335JR=Q345B S355NL=Q345E EN10113 S420NL=Q420B S460NL=Q460C | S235JR E275~E335 S335JR S355NL S420NL | S235JR E275~E335 E335JR S355NL S420NL | A572M Gr50=Q345B Gr60=Q420B Gr65=Q460C A36/A36M =Q235 | SS330 SS400=Q235B SS490=Q345B SS490M=Q355 SS540=Q420B | G3101 SS440=Q235B SM400=Q235B G3135 SPFC590=Q345B SM520=Q355 G3124 SEV295=Q420 G3106 SM570=Q460 |
1.What is an I-section beam?
An I-beam is any of various structural members with an Ɪ- (serif capital letter 'I') or H-shaped cross-section.
2.What is the best steel section for a beam?
I-beams, also known as universal beams, are among the strongest and most widely used steel beams in construction. Their signature "I" shape – with a vertical web and horizontal flanges – gives them excellent strength-to-weight ratios, allowing them to support heavy loads across long spans.
3.What is the use of steel I-beam?
I beams are usually the critical support trusses in structural steel construction. I beams are almost always used in the construction of large structures, such as warehouses and large buildings.
4.Why is I-beam used?
I beam is a shape of structural steel used in buildings and it is also known as H, W, wide, universal beam, or rolled joist. They are designed to play a key role as a support member in structures. These beams have the capacity to withstand various types of loads.
5.What is the strongest part of an I-beam?
The web is the middle part of the I-beam that connects the two flanges. It's the most important part of the entire structure that takes on the brunt of the weight. If there's a defect in the web, that could jeopardize the entire beam. As such, web thickness has a big influence on I-beam strength.