As a reliable Manufacturer in China, I supply long carbon steel bolts that stand up to heavy duty use. Our bolts are forged from high-grade carbon steel, tempered and machined for precise threading, ensuring strong joints and easy assembly. I offer long lengths, various head types, and standard threads to fit your equipment, with strict QC and material traceability. We use hot-dip galvanizing or zinc plating options for corrosion resistance in harsh environments, and we can tailor heat treatments to meet your grade requirements. My production lines run with short lead times and stable supply, ideal for OEM projects and bulk orders. Certificates like ISO, material test reports, and batch traceability are provided on request. If you need reliable supply of long carbon steel bolts for construction, mining, or machinery, I’m here to help. Contact me for competitive pricing and flexible packaging in China, backed by a dedicated Manufacturer you can trust.
From concept to delivery, long carbon steel bolts require design, material, and finish aligned to global standards. A capable supplier collaborates with buyers to define specification: diameter, thread pitch, length, head type, material grade, coating, and tolerances. By sourcing certified carbon steel, applying precise machining and threading, and heat treating for required strength, the bolts meet performance needs. Surface options such as zinc plating, hot-dip galvanizing, or black oxide extend life in harsher environments while controlling cost. Traceability to heat and lot numbers supports accountability from the first cut to final shipment. On the delivery side, production planning, quality assurance, packaging, and shipping are coordinated for global destinations. In-house inspections, first-article checks, and batch records ensure consistency across runs. Flexible capacity, clear lead times, and compliant packaging reduce supply-chain risk. Transparent documentation, standard incoterms, and dependable after-sales support help procurement teams move smoothly from concept to delivery, meeting project milestones and budget targets while maintaining quality at every step.
| Bolt_ID | Material_Standard | Grade | Diameter_mm | Length_mm | Thread_Type | Finish | Coating_Thickness_microns | Lead_Time_Days | Certification |
|---|---|---|---|---|---|---|---|---|---|
| BTL-001 | ASTM A307 | Grade A | 6 | 50 | Coarse | Zinc Plated | 5-7 | 5 | ISO 9001:2015 Verified |
| BTL-002 | ASTM A307 | Grade B | 8 | 80 | Coarse | Hot-Dip Galvanized | 15-18 | 7 | ISO 9001:2015 Verified |
| BTL-003 | ASTM A307 | Grade A | 10 | 100 | Fine | Black Oxide | 3-5 | 6 | ISO 9001:2015 Verified |
| BTL-004 | ASTM A307 | Grade B | 12 | 120 | Coarse | Zinc Plated | 6-10 | 8 | ISO 9001:2015 Verified |
| BTL-005 | ASTM A307 | Grade A | 16 | 150 | Fine | Zinc Plated | 8-12 | 9 | ISO 9001:2015 Verified |
| BTL-006 | ASTM A307 | Grade B | 20 | 200 | Coarse | Hot-Dip Galvanized | 20-25 | 12 | ISO 9001:2015 Verified |
| BTL-007 | ASTM A307 | Grade A | 22 | 180 | Fine | Black Oxide | 3-5 | 11 | ISO 9001:2015 Verified |