CS Type A/B/C is a hot dip galvanized steel grade that meets the ASTM A653/A653M standard, where CS stands for Commercial Steel; Type A, B, and C, which implies upgraded mechanical properties and surface finishes, CS Type A for general applications and CS Type C for precision machining requirements. Wanzhi Group offers commercial grade CS, deep-drawn (DQ), formed (FS), and structural (SS) hot-dip galvanized steel in accordance with ASTM A653, both as raw material and finished product.

ASTM A653 Chemical Composition Requirements
Elemental | Type A/B/C General scope |
C | ≤0.10% |
Mn | ≤0.60% |
P | ≤0.04% |
S | ≤0.045% |
CS Type A/B/C Core Comparison
Comparison Item | CS Type A GI Steel | CS Type B GI Steel | CS Type C GI Steel |
Surface | Rough (Obvious zinc spangle) | Smoother (Micro zinc spangle) | Very smooth (No zinc spangle) |
Glossiness | Matte | Semi-matte | Matte/Glossy |
Cost | Lowest | Medium | Highest |
Corrosion Resistance | Basic | Good | Excellent |
Processing Difficulty | Low | Medium | High (Requires precision equipment) |
Alternative | Cold rolled SPCC | DX52D | National standard CR2 |
CS Type A/B/C Galvanized Steel Application
CS Type A/B/C Galvanized Steel is designed for different project requirements, CS Type A is suitable for general purpose or cost sensitive projects, CS Type B is designed to balance performance and appearance, CS Type C is preferred for high end appearance or precision machining.
CS Type A Galvanized Steel
- Frames, brackets, purlins and other non-appearance parts
- Heating, ventilation and air conditioning (HVAC) ducts
- Warehouse shelves, agricultural machinery. Simple shelf stopper
- Bridge guardrail, traffic sign base
CS Type B Galvanized Steel
- Exterior siding, roof tiles, interior partitions
- Interior decoration
- Lighting fixtures, refrigerators, washing machines
- Refrigerators, washing machines
CS Type C Galvanized Steel
- Automobile body panels, body coverings, chassis parts
- Exterior parts such as ovens and microwave ovens
- Precision metal decorative parts, elevator door panels, vending machine housings
CS Type A/B/C Corresponding to International Standards
standardized system | CS Type A | CS Type B | CS Type C |
European Standard EN 10346 | DX51D+Z | DX52D+Z | DX53D+Z |
Japanese standard JIS G3302 | SGCC | SGCD1 | SGCD2 |
National standard GB/T 2518 | CR1 | CR2 | CR3 |
CS Type A/B/C Manufacturer
Wanzhi Group not only provides commercial grade CS Type A/B/C, deep-drawn (DQ), formed (FS) and structural (SS) hot-dipped galvanized steels, but also supports customized coating weights, with popular models such as galvanized G90, galvanized G60,galvanized G30,galvanized G550 etc.
Service
One-stop service, Wanzhi Group provides steel OEM ODM service, we can complete the production and design according to the application requirements, including regular specification ASTM A653/A653M CS Type A/B/C hot dipped galvanized steel coils, plates, profiles, bending, flattening, slitting, forming, stamping, punching, painting and so on.


Feedback
So far, our hot-dip galvanized steel coils, hot-dip galvanized steel sheets, tubes and pipes have been exported all over the world, playing an important role in construction projects, factory production, etc., and the quality/quantity of our products has also received positive feedback.
CS Type A/B/C are common grades of commercial hot-dip galvanized steel products with yield strengths of 180 – 350 MPa and tensile strengths of 270 – 410 MPa, which are more suitable for non-load-bearing applications. What kind of metal material are you looking for? Leave a comment and let us provide you with details!