The Carbon Steel Threaded Rod (commonly known as all thread rod, continuous stud, or DIN 975/976 threaded bar) is a fundamental continuous fastener used extensively across MEP building installation, structural steel anchoring, HVAC duct suspension, and heavy machinery tie-down assemblies. Fabricated from high-grade carbon steel (Q235B or 45# steel) and precision-rolled throughout its entire length, this fastener provides continuous thread engagement for custom cutting, joint extension, and high tensile load distribution in accordance with global ISO standards.
Technical Specifications of Carbon Steel Threaded Rod
We manufacture continuous carbon steel threaded rods in both Class 4.8 for general construction suspension and Grade 8.8 quenched and tempered steel for structural anchoring under heavy tension. The uniform thread pitch guarantees effortless engagement with DIN 934 hex nuts, coupling nuts, and flat washers.
| Parameter | Class 4.8 Threaded Rod | Grade 8.8 High Tensile Threaded Rod |
|---|---|---|
| Core Material Grade | Low Carbon Steel (Q195 / Q235B) | Medium Carbon Steel (45#) / 40Cr Steel |
| Tensile Strength (Min) | 400 N/mm² (400 MPa) | 800 N/mm² (800 MPa) |
| Yield Strength (Min) | 320 N/mm² (320 MPa) | 640 N/mm² (640 MPa) |
| Execution Standards | DIN 975 / DIN 976-1 / ASME B18.31.2 | DIN 975 / DIN 976-1 / ISO 898-1 |
| Thread Pitch Tolerance | Metric 6g / Imperial Class 2A Fit | Metric 6g / Imperial Class 2A Fit |
Precision Thread Rolling and Production Process for Carbon Steel Threaded Rod
At our manufacturing facility in Handan, China, continuous carbon steel threaded rods undergo cold wire drawing, two-roll thread rolling, and precision thermal treatment:
- Cold Drawing & Straightening: Raw wire rods are cold-drawn to precise pitch diameters and straightened to maintain tight axial straightness across 1m to 3m lengths.
- Continuous High-Speed Thread Rolling: Precision thread rolling dies form continuous helical thread profiles without cutting metal fibers, increasing thread shear resistance and surface hardness.
- Thermal Heat Treatment (For Grade 8.8): Full-length rods pass through continuous mesh-belt furnaces for controlled quenching and tempering to achieve uniform 800 MPa tensile strength throughout.
- Surface Black Oxide Finish: Chemical blackening applies a micro-thin anti-rust oil coating that protects against indoor atmospheric corrosion while retaining tight pitch dimensions.
Heavy Duty Industrial Applications of Carbon Steel Threaded Rod
Due to their customizable cutting length and continuous thread profile, carbon steel threaded bars serve as versatile tension elements across major engineering fields:
- MEP, HVAC & Pipe Suspension: Hanging air conditioning ducts, cable tray systems, fire sprinkler piping, and strut channels from concrete ceilings.
- Concrete Anchoring & Chemical Studs: Embedded into concrete foundations with epoxy resin to secure structural columns, heavy machinery bases, and guardrail posts.
- Structural Steel Framing & Formwork: Used as tie-rods, flange tension bolts, and formwork clamping rods in building construction.
Quality Assurance and Export Packaging for Carbon Steel Threaded Rod
Handan YiHao Fastener enforces comprehensive Quality Control (QC) standards for all overseas export shipments. Testing procedures include full-length axial straightness checks, thread ring gauge pass/fail tests, tensile strength verification, and oil film coating inspection.
For maritime transit, 1-meter to 3-meter rods are bundled firmly, wrapped in heavy-duty waterproof woven bags, and secured on ISPM 15 compliant fumigated wooden pallets or in solid wooden crates to prevent bending and moisture during shipping.
Request Factory Direct Pricing for Carbon Steel Threaded Rods
Looking for a trusted manufacturer in Handan, China for Class 4.8 or Grade 8.8 carbon steel threaded rods (DIN 975 / DIN 976)? Contact Handan YiHao Fastener today for technical datasheets, custom cut lengths, pre-assembled nuts & washers, and direct bulk export quotes.
