Quanzhou Yangxin Machinery Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 10 |
| Delivery Time | 8 |
| Packaging Details | BOX |
| Model No | Bolt And Nut |
| Trademark | JBXF |
| Shipping | By Sea, By Air, DHL, Other |
| Head Type | Round |
| Thread Length | Full Thread, Partial Thread |
| Hs Code | 84314999 |
| Point Type | Flat |
| Head Height | 0.375 |
| Production Capacity | 50000 Pieces /Month |
| Finish | Plain |
| Head Diameter | 0.875 |
| Thread Size | 1/2-13 |
| Thread Type | Coarse |
| Oem | Available |
| Drive Type | Square |
| Brand Name | JBXF |
| Model Number | pc-300 |
| Certification | iso |
| Place of Origin | china |
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Product Specification
| Payment Terms | T/T | Supply Ability | 10 |
| Delivery Time | 8 | Packaging Details | BOX |
| Model No | Bolt And Nut | Trademark | JBXF |
| Shipping | By Sea, By Air, DHL, Other | Head Type | Round |
| Thread Length | Full Thread, Partial Thread | Hs Code | 84314999 |
| Point Type | Flat | Head Height | 0.375 |
| Production Capacity | 50000 Pieces /Month | Finish | Plain |
| Head Diameter | 0.875 | Thread Size | 1/2-13 |
| Thread Type | Coarse | Oem | Available |
| Drive Type | Square | Brand Name | JBXF |
| Model Number | pc-300 | Certification | iso |
| Place of Origin | china | ||
| High Light | Wear Resistance Excavator Bolt ，Optimal Torque Specs Excavator Bolt ，Crawler Dozer Track Excavator Bolt | ||
Bulk Pack Track Chain Fasteners: High-Quality Link Bolts with Hex Nuts for Crawler Excavator & Dozer Track Repair - Optimal Torque Specs, Wear Resistance, Reduced Vibration Loosening
Engineered for Thermal Extremes:
Material: A286 Superalloy (Fe-Ni-Cr) | ASTM A453 Grade 660
Temp Range: -200°C to +700°C Continuous Service
Coating: Aluminized Diffusion Layer (100µm) + Ceramic Sealer
Strength: 140 ksi Yield at 650°C (per ASTM E21)
Certifications: ASME B18.2.1, API 20E, DNV GL-OS-C401
Technical Superiority:
These bolts resist oxidation, creep deformation, and thermal cycling fatigue in environments where standard steel fasteners fail. The A286 core’s gamma-prime precipitates maintain 85% tensile strength at 600°C vs. 35% for Grade 8.8 steel. Aluminized coating forms a stable α-Al₂O₃ barrier, reducing scale formation by 90% (tested per ASTM G54). Rolled threads with UNJ profile (MIL-S-8879) prevent stress-cracking under rapid quenching scenarios.
Critical Applications:
Hot slag handling dozers (steel mills)
Underground coal fire zones
Arctic permafrost operations
Geothermal drilling rigs
Performance Validation:
| Test Condition | Result | Standard |
|---|---|---|
| Thermal Cycling (650°C ↔ 25°C, 500 cycles) | No thread galling 0.2% permanent elongation | ASTM E606 |
| Sulfur Resistance (H₂S 5% vol. at 450°C) | Corrosion rate: 0.01 mm/year | NACE TM0177 |
| Impact Toughness (-50°C) | 45J (min) | ISO 148-1 |
OEM-Specific Kits:
| Equipment | Bolt Size | Kit Includes |
|---|---|---|
| Caterpillar® D11T CD | M30x110mm | Bolt + RINGFEDER® lock washer |
| Liebherr® PR 776 Litronic | M27x95mm | Bolt + Nord-Lock X-series washer |
| Komatsu® D375A-8 | M36x130mm | Bolt + Schnorr SAF disc spring |
Installation Protocol:
Pre-heat: Bolts to 150°C (infrared) in sub-zero environments
Torque Sequence:
Step 1: 30% spec torque (e.g., 330 Nm for M24)
Step 2: 60% spec torque
Step 3: 100% + 90° angle tightening
Post-Installation: Apply high-temp anti-seize (Fe-based, 1,200°C rating)
Maintenance Advantages:
Reusability: Withstands 5 re-torque cycles at 500°C+
Inspection: Thermal discoloration indicator (blue hue = >550°C exposure)
Failure Prevention:
Zero liquid metal embrittlement (LME) with Zn/Al alloys
Immune to chloride stress corrosion cracking (CSCC)
Supply Options:
Standard: Zinc-nickel plated for indoor storage
Vacuum-Sealed: Argon-filled bags for critical projects
Traceability: Laser-etched QR codes → Material Certs (EN 10204 3.2)
Metallurgy:
25% Cr / 15% Ni / 2% Ti / 1.5% Mo composition
Solution treated @ 980°C → Aged @ 720°C
Coating Science:
Hot-dip aluminizing @ 700°C → Diffusion annealing
Sealer: Waterglass-based SiO₂ ceramic (5–8µm)
Testing Compliance:
Creep rupture: 10,000 hrs @ 600°C / 350 MPa (ISO 204)
Charpy V-notch: 50J min @ -196°C (LNG applications)
Endurance Data:
Field lifespan: 2–3× standard bolts in kiln feed dozers
Maintenance cost reduction: 41% (Case study: Copper smelter, Chile)
WhatsApp:+861803906767
Company Details
Business Type:
Manufacturer
Year Established:
2017
Total Annual:
20000-50000
Employee Number:
30~50
Ecer Certification：
Verified Supplier
Quanzhou Yangxin Machinery Co., Ltd. was founded in 2017 and is located in Quanzhou, Fujian Province, on the Silk Road. It is adjacent to Quanzhou Jinjiang Airport and has convenient transportation. Our company specializes in producing high-strength track shoes, bolts, and various chassis vulnerable... Quanzhou Yangxin Machinery Co., Ltd. was founded in 2017 and is located in Quanzhou, Fujian Province, on the Silk Road. It is adjacent to Quanzhou Jinjiang Airport and has convenient transportation. Our company specializes in producing high-strength track shoes, bolts, and various chassis vulnerable...
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