Oilfield Driving Chains

1

16S-1～40S-1

High-strength alloy steel (20CrMnTi) for chain plates/rollers, carbon steel pins, nickel-plated surface for corrosion resistance

1. Wear from high-load power transmission; 2. Corrosion from oilfield saline-alkali and drilling fluid contamination.

1. Inspect chain tension weekly to avoid overloading; 2. Clean and apply anti-corrosion lubricant after contact with drilling fluid.

2

16S-2～40S-2

Alloy steel (40Cr) for core components, hardened roller surfaces, zinc-plated pins to resist rust

1. Roller wear from uneven load distribution; 2. Pin bending from machinery vibration during drilling.

1. Ensure uniform load during operation per API 7K; 2. Tighten chain sprockets monthly to reduce vibration.

3

16S-3～40S-3

Wear-resistant alloy steel for chain plates, chrome-plated pins, synthetic grease-sealed rollers

1. Seal damage leading to lubricant loss; 2. Chain plate fatigue from continuous heavy-duty operation.

1. Check seal integrity monthly and replenish lubricant; 2. Replace chains when plate deformation exceeds 0.3mm.

4

16S-4～40S-4

High-tensile alloy steel, carburized treatment for chain plates, corrosion-resistant pins

1. Tensile fatigue from long-term power transmission; 2. Abrasion from dust and gravel in oilfield environments.

1. Avoid exceeding rated tensile strength; 2. Install chain guards to prevent debris entry.

5

24S-5～28S-5

Alloy steel (20CrMnTi) with quenching treatment, nickel-plated surface, sealed roller bearings

1. Bearing wear from insufficient lubrication; 2. Corrosion from high humidity in offshore oilfields.

1. Use API-compliant high-temperature anti-wear lubricant; 2. Conduct anti-corrosion inspection quarterly in offshore settings.

6

20S-6～32S-6

Wear-resistant cast alloy, hardened chain teeth, zinc-plated surface for rust prevention

1. Chain tooth wear from misalignment with sprockets; 2. Fatigue damage from frequent start-stop cycles.

1. Align chains and sprockets precisely per ANSI B29.1; 2. Minimize sudden start-stops to reduce impact.

7

24S-8～32S-8

High-strength carbon steel, heat-treated for toughness, fluorine-based anti-corrosion coating

1. Coating damage leading to corrosion; 2. Roller deformation from high-pressure operation.

1. Inspect coating monthly and touch up if damaged; 2. Monitor operation pressure to stay within rated limits.

8

24S-10～28S-10

Alloy steel with carburizing and quenching, corrosion-resistant pins, sealed lubrication system

1. Lubrication system blockage; 2. Chain plate cracking from extreme load during deep drilling.

1. Flush lubrication channels quarterly; 2. Conduct non-destructive testing annually for hidden cracks.

1

10A-1

Carbon steel (Q235) for chain plates, alloy steel pins, zinc-plated surface to resist corrosion

1. Pin wear from insufficient lubrication; 2. Chain stretch from long-term medium-load operation.

1. Lubricate pins every 80 working hours; 2. Check chain stretch monthly and adjust tension.

2

10A-2

Alloy steel (40Cr) for core components, hardened rollers, nickel-plated surface

1. Roller abrasion from dust and debris; 2. Chain plate corrosion from oilfield chemical residues.

1. Clean chains weekly to remove debris; 2. Avoid contact with corrosive chemicals when possible.

3

12A-1

Wear-resistant alloy steel, heat-treated chain plates, chrome-plated pins

1. Chain tooth wear from sprocket misalignment; 2. Fatigue from frequent load changes.

1. Align chains with sprockets precisely; 2. Stabilize load during operation to reduce fatigue.

4

12A-2

High-tensile carbon steel, carburized treatment for toughness, anti-rust coating

1. Coating damage leading to rust; 2. Pin bending from machinery vibration.

1. Inspect coating monthly and repair scratches; 2. Tighten sprocket fasteners to reduce vibration.

1

08B-1

Carbon steel chain plates, alloy steel pins, zinc-plated surface for rust prevention

1. Chain stretch from continuous operation; 2. Pin wear from lack of lubrication.

1. Adjust chain tension monthly; 2. Apply lubricant every 60 working hours.

2

08B-2

Alloy steel (20Cr) for pins, carbon steel chain plates, nickel-plated surface

1. Corrosion from high humidity; 2. Roller wear from dust contamination.

1. Keep installation area dry; 2. Install chain guards to block dust.

3

08B-3

Wear-resistant alloy steel, heat-treated rollers, anti-corrosion coating

1. Coating wear leading to corrosion; 2. Chain plate fatigue from start-stop cycles.

1. Touch up coating quarterly; 2. Minimize frequent start-stops.

Are these chains compatible with all oilfield drilling/workover rigs?

All chains comply with API 7K and ANSI B29.1 standards, ensuring compatibility with most oilfield drilling rigs, workover rigs, and auxiliary equipment. Provide your rig model for precise matching verification.

How to choose the right chain for my oilfield equipment?

Select based on equipment load (S-type for heavy load, A/B-type for medium/light load), operation pressure, and environment. For deep drilling, choose 16S-1～40S-4; for auxiliary systems, 10A/08B series are suitable.

What lubricants are recommended for these oilfield driving chains?

Use API-compliant high-temperature anti-wear lubricants (NLGI Grade 2) for heavy-load chains (S-type); for A/B-type chains, ISO VG 46 lubricating oil is suitable. Avoid lubricants incompatible with anti-corrosion coatings.