Stairs, Guardrails & Matching Parts for ZJ40 Drilling Rig

1

Z05010400285AA

Stairs for ZJ40

High-strength structural steel (Q355B); step plates with anti-slip texture; seamless welding at joints; surface shot blasting + epoxy anti-rust coating; designed to bear a maximum load of 150kg per step, complying with API Spec 4F and GB 2894-2008.

1. Anti-slip surface wear from frequent foot traffic and mud accumulation; 2. Weld seam fatigue cracking caused by rig vibration; 3. Corrosion from rain, drilling fluids, and outdoor moisture.

1. Clean steps daily to remove mud and debris; avoid using sharp tools that scratch the anti-slip texture; 2. Inspect weld seams monthly for cracks, repairing immediately with professional welding; 3. Touch up anti-rust coating promptly if peeling occurs, especially at step edges.

2

Z05010400285AA

Stairs

High-strength structural steel (Q355B); step plates with anti-slip texture; seamless welding at joints; surface shot blasting + epoxy anti-rust coating; designed to bear a maximum load of 150kg per step, complying with API Spec 4F and GB 2894-2008.

1. Anti-slip surface wear from frequent foot traffic and mud accumulation; 2. Weld seam fatigue cracking caused by rig vibration; 3. Corrosion from rain, drilling fluids, and outdoor moisture.

1. Clean steps daily to remove mud and debris; avoid using sharp tools that scratch the anti-slip texture; 2. Inspect weld seams monthly for cracks, repairing immediately with professional welding; 3. Touch up anti-rust coating promptly if peeling occurs, especially at step edges.

3

Z05010400288AA

Stairs assembly

High-strength structural steel (Q355B); integrated assembly of steps, side frames, and connection components; anti-slip step plates; surface anti-rust coating; pre-assembled for easy on-site installation; designed to connect the rig’s lower and upper platforms, complying with API Spec 4F.

1. Loosening of connection points due to rig vibration and frequent use; 2. Step wear from heavy foot traffic; 3. Corrosion at joint gaps where moisture accumulates.

1. Check connection points weekly for tightness, re-tightening bolts if loose; 2. Replace anti-slip step plates if wear exceeds 1mm; 3. Clean joint gaps monthly to remove moisture and debris, applying anti-rust grease to prevent corrosion.

4

Z05010400287AA

Stairs Ⅱ

High-strength structural steel (Q355B); auxiliary stair design with anti-slip steps; surface anti-rust coating; lighter yet durable, designed for secondary access to auxiliary platforms (e.g., rotating table vicinity), complying with GB 2894-2008.

1. Edge wear from accidental impact with tools during maintenance; 2. Corrosion from drilling fluid splashes; 3. Anti-slip texture degradation from prolonged exposure to sunlight and rain.

1. Avoid hitting stair edges with tools; use protective padding during maintenance; 2. Install a splash guard to prevent drilling fluids from contacting the stairs; 3. Reapply anti-slip coating annually to maintain texture integrity.

5

Z05010400289AA

Stairs Ⅱ

High-strength structural steel (Q355B); auxiliary stair design with anti-slip steps; surface anti-rust coating; lighter yet durable, designed for secondary access to auxiliary platforms (e.g., rotating table vicinity), complying with GB 2894-2008.

1. Edge wear from accidental impact with tools during maintenance; 2. Corrosion from drilling fluid splashes; 3. Anti-slip texture degradation from prolonged exposure to sunlight and rain.

1. Avoid hitting stair edges with tools; use protective padding during maintenance; 2. Install a splash guard to prevent drilling fluids from contacting the stairs; 3. Reapply anti-slip coating annually to maintain texture integrity.

1

Z05010602129AA

Guardrails Ⅰ

High-strength structural steel (Q235B); seamless steel pipe frame; surface zinc-plated for anti-rust protection; height 1100mm (complying with GB 2894-2008); designed for main stairs, providing continuous fall protection, complying with API Spec 4F.

1. Bending deformation from impact with drilling tools or equipment during transportation/maintenance; 2. Corrosion at welded joints due to moisture accumulation; 3. Wear at hand contact points from frequent use.

1. Secure guardrails with straps during rig transportation to avoid impact; use padding to protect pipe surfaces; 2. Inspect welded joints monthly for rust and cracks, touching up anti-rust coating as needed; 3. Clean hand contact points weekly to remove dirt and sweat, applying a thin layer of anti-rust grease.

2

Z05050700464AA

GuardrailsⅠ

High-strength structural steel (Q235B); seamless steel pipe frame; surface zinc-plated for anti-rust protection; height 1100mm (complying with GB 2894-2008); designed for main stairs, providing continuous fall protection, complying with API Spec 4F.

1. Bending deformation from impact with drilling tools or equipment during transportation/maintenance; 2. Corrosion at welded joints due to moisture accumulation; 3. Wear at hand contact points from frequent use.

1. Secure guardrails with straps during rig transportation to avoid impact; use padding to protect pipe surfaces; 2. Inspect welded joints monthly for rust and cracks, touching up anti-rust coating as needed; 3. Clean hand contact points weekly to remove dirt and sweat, applying a thin layer of anti-rust grease.

3

Z05010600948AA

GuardrailsⅡ

High-strength structural steel (Q235B); lightweight pipe frame; surface anti-rust coating; height 1100mm; designed for auxiliary stairs (Stairs Ⅱ) and rotating table vicinity, providing targeted fall protection, complying with API Spec 4F.

1. Loosening of connection points due to rig vibration; 2. Corrosion from drilling fluid splashes; 3. Bending from accidental leaning or impact during maintenance.

1. Check connection points weekly for tightness, re-tightening bolts if loose; 2. Install a splash guard to prevent drilling fluids from contacting the guardrails; 3. Avoid leaning heavy objects on the guardrails during maintenance.

1

P6900062AA

Safety pin 6X158x188

Alloy steel (35CrMoA); heat-treated for toughness and wear resistance; surface anti-rust coating; size 6×158×188mm; designed to lock guardrail connections, with a spring-loaded locking mechanism to prevent accidental removal, complying with API Spec 4F.

1. Spring fatigue failure from frequent insertion/removal; 2. Corrosion from outdoor moisture and drilling fluids; 3. Wear at the pin surface due to friction with connection holes.

1. Avoid frequent unnecessary insertion/removal; inspect the spring monthly for elasticity, replacing the pin if the spring is weak; 2. Apply anti-rust grease to the pin surface before installation; 3. Clean connection holes regularly to remove debris, reducing friction wear.

2

P9000126AA

Safety pin

Alloy steel (35CrMoA); heat-treated for toughness; surface anti-rust coating; universal locking design for stair connection points; easy to install and remove, complying with API Spec 4F safety locking standards.

1. Wear at the locking end from repeated use; 2. Corrosion from moisture accumulation in the locking mechanism; 3. Bending deformation from accidental impact.

1. Inspect the locking end quarterly for wear, replacing the pin if wear exceeds 0.5mm; 2. Clean the locking mechanism monthly to remove moisture and debris; 3. Store spare pins in a dry place to prevent corrosion.

3

P2000070AA

One-way tapered pin B30X80

High-strength alloy steel (40Cr); tapered design (B30×80mm); surface anti-rust coating; one-way locking to secure stairs and guardrails, preventing loosening from vibration, complying with API Spec 4F.

1. Wear at the tapered surface due to vibration-induced friction; 2. Corrosion from outdoor exposure; 3. Damage to the pin head from improper installation (e.g., hammering too hard).

1. Install the pin with a rubber mallet to avoid damaging the pin head; 2. Apply anti-wear grease to the tapered surface before installation; 3. Inspect the tapered surface quarterly for wear, replacing the pin if it no longer locks securely.

1

P991121783AA

Edge beam

High-strength structural steel (Q355B); thickened beam design; surface anti-rust coating; installed along stair edges to prevent bending and wear, enhancing stair structural rigidity, complying with GB/T 30029-2013.

1. Wear from accidental impact with tools and equipment; 2. Corrosion from moisture accumulation at the edge-stair joint; 3. Bending deformation from uneven load or heavy impact.

1. Protect edge beams with padding during maintenance to avoid impact; 2. Clean the joint between edge beams and stairs monthly to remove moisture; 3. Inspect quarterly for bending, straightening with a hydraulic jack if minor deformation occurs.

2

P991121781AA

Edge beam

High-strength structural steel (Q355B); thickened beam design; surface anti-rust coating; installed along stair edges to prevent bending and wear, enhancing stair structural rigidity, complying with GB/T 30029-2013.

1. Wear from accidental impact with tools and equipment; 2. Corrosion from moisture accumulation at the edge-stair joint; 3. Bending deformation from uneven load or heavy impact.

1. Protect edge beams with padding during maintenance to avoid impact; 2. Clean the joint between edge beams and stairs monthly to remove moisture; 3. Inspect quarterly for bending, straightening with a hydraulic jack if minor deformation occurs.

3

P991121782AA

Edge beam

High-strength structural steel (Q355B); thickened beam design; surface anti-rust coating; installed along guardrail frames to reinforce structural rigidity, preventing bending under impact, complying with API Spec 4F.

1. Bending deformation from impact with drilling tools; 2. Corrosion from outdoor exposure and drilling fluids; 3. Wear at connection points due to vibration.

1. Avoid colliding with edge beams when moving tools; use protective covers if needed; 2. Clean the beam surface regularly to remove drilling fluids; 3. Inspect connection points monthly for wear, replacing worn bolts promptly.

4

P991121784AA

Edge beam

High-strength structural steel (Q355B); thickened beam design; surface anti-rust coating; installed along guardrail frames to reinforce structural rigidity, preventing bending under impact, complying with API Spec 4F.

1. Bending deformation from impact with drilling tools; 2. Corrosion from outdoor exposure and drilling fluids; 3. Wear at connection points due to vibration.

1. Avoid colliding with edge beams when moving tools; use protective covers if needed; 2. Clean the beam surface regularly to remove drilling fluids; 3. Inspect connection points monthly for wear, replacing worn bolts promptly.

5

P6219077AA

Stiffener

Structural steel (Q235B); narrow, rigid design; surface anti-rust coating; installed at stair and guardrail joints to prevent local deformation, distributing stress evenly, complying with GB/T 30029-2013.

1. Weld seam cracking due to stress concentration; 2. Corrosion from outdoor moisture; 3. Bending deformation from lateral impact.

1. Inspect weld seams monthly for cracks, repairing immediately if found; 2. Touch up anti-rust coating on peeling areas promptly; 3. Avoid hitting the stiffener with tools during maintenance to prevent bending.

1

P991109263AA

Closing plate 60×60

Structural steel (Q235B); size 60×60mm; thickness ≥5mm; surface anti-rust coating; square design to seal small openings in guardrail pipes, preventing debris and moisture entry, complying with API Spec 4F.

1. Loosening and loss due to rig vibration; 2. Corrosion from outdoor exposure; 3. Edge damage from improper installation/removal.

1. Secure the plate with high-strength bolts; check tightness monthly; 2. Apply anti-rust grease to the edges before installation; 3. Use a rubber mallet to install/remove the plate to avoid edge damage.

2

P6219073AA

Closing plate

Structural steel (Q235B); rectangular design; surface anti-rust coating; used to seal stair connection gaps, preventing moisture and debris accumulation, complying with GB/T 30029-2013.

1. Corrosion from moisture in connection gaps; 2. Loosening due to vibration; 3. Wear at the contact surface with stairs.

1. Apply a thin layer of sealant around the plate to prevent moisture entry; 2. Check monthly for tightness and corrosion; 3. Clean the contact surface before installation to reduce friction wear.

3

P6219074AA

Closing plate

Structural steel (Q235B); rectangular design; surface anti-rust coating; used to seal stair connection gaps, preventing moisture and debris accumulation, complying with GB/T 30029-2013.

1. Corrosion from moisture in connection gaps; 2. Loosening due to vibration; 3. Wear at the contact surface with stairs.

1. Apply a thin layer of sealant around the plate to prevent moisture entry; 2. Check monthly for tightness and corrosion; 3. Clean the contact surface before installation to reduce friction wear.

4

P6219075AA

Closing plate

Structural steel (Q235B); circular design; surface anti-rust coating; used to seal pipe ends in the access system, preventing drilling fluids from entering, complying with API Spec 4F.

1. Corrosion from drilling fluid splashes; 2. Loosening due to vibration; 3. Bending deformation from accidental impact.

1. Install a splash guard around the plate to prevent drilling fluid contact; 2. Check tightness monthly; 3. Avoid placing tools on the plate to prevent bending.

5

P6219076AA

Closing plate φ160

Structural steel (Q235B); diameter 160mm; thickness ≥6mm; surface anti-rust coating; circular design to seal large-diameter pipe ends, preventing debris and moisture entry, complying with API Spec 4F.

1. Loosening due to heavy vibration; 2. Corrosion from outdoor exposure and moisture; 3. Wear at the edge from contact with other components.

1. Use lock washers to secure the plate, preventing loosening from vibration; 2. Clean the plate surface regularly and touch up anti-rust coating; 3. Inspect the edge quarterly for wear, replacing the plate if needed.

6

P981140550AA

Inserting pipe

Structural steel (Q235B); seamless steel pipe; surface anti-rust coating; designed to connect guardrail sections, ensuring a tight fit and structural continuity, complying with API Spec 4F.

1. Wear at the insertion end from repeated assembly/disassembly; 2. Corrosion from moisture in the connection gap; 3. Bending deformation from impact during transportation.

1. Apply anti-wear grease to the insertion end before assembly; 2. Clean the connection gap monthly to remove moisture; 3. Secure the pipe with straps during transportation to avoid impact.

7

P991160916AA

Cross pipe

Structural steel (Q235B); seamless steel pipe; surface anti-rust coating; horizontal design to connect guardrail posts, enhancing guardrail rigidity, complying with GB 2894-2008.

1. Torsional deformation from lateral vibration; 2. Corrosion from outdoor exposure; 3. Wear at connection points due to friction.

1. Ensure proper alignment during installation to avoid torsional stress; 2. Clean the pipe surface regularly to prevent corrosion; 3. Inspect connection points quarterly for wear, replacing worn parts promptly.

8

P991160917AA

Hoisting pipe L=110

Structural steel (Q235B); length 110mm; seamless steel pipe; surface anti-rust coating; designed as a lifting point for stairs and guardrails during installation/maintenance, capable of bearing lifting loads up to 300kg, complying with API Spec 4F.

1. Wear at the lifting surface from repeated use; 2. Corrosion from outdoor exposure; 3. Weld seam cracking from excessive lifting load.

1. Do not exceed the rated lifting load (300kg); 2. Inspect the lifting surface quarterly for wear; 3. Check weld seams monthly for cracks, repairing immediately if found.

1

Z05010500399AA

Anti-slip gear plate

High-strength steel (Q355B); surface with serrated anti-slip texture; thickness ≥8mm; installed on stair steps to enhance anti-slip performance in wet, muddy conditions, complying with GB 2894-2008.

1. Anti-slip texture wear from frequent foot traffic and mud accumulation; 2. Corrosion from rain and drilling fluids; 3. Loosening of connection bolts due to vibration.

1. Clean the plate daily to remove mud; avoid using sharp tools that scratch the serrated texture; 2. Touch up anti-rust coating promptly if peeling occurs; 3. Check connection bolts weekly for tightness.

2

P6038437AA

Connection pad eye

Alloy steel (35CrMoA); heat-treated for toughness; surface anti-rust coating; hook design to connect stairs, guardrails, and the rig frame, facilitating installation and ensuring stability, complying with API Spec 4F.

1. Wear at the hook surface from repeated connection; 2. Fatigue cracking from long-term load-bearing; 3. Corrosion from outdoor exposure and moisture.

1. Inspect the hook surface quarterly for wear, replacing the pad eye if wear exceeds 1mm; 2. Check for cracks monthly with ultrasonic testing; 3. Apply anti-rust grease to the hook regularly.

3

P6042009AA

Connection pad eye

Alloy steel (35CrMoA); heat-treated for toughness; surface anti-rust coating; hook design to connect stairs, guardrails, and the rig frame, facilitating installation and ensuring stability, complying with API Spec 4F.

1. Wear at the hook surface from repeated connection; 2. Fatigue cracking from long-term load-bearing; 3. Corrosion from outdoor exposure and moisture.

1. Inspect the hook surface quarterly for wear, replacing the pad eye if wear exceeds 1mm; 2. Check for cracks monthly with ultrasonic testing; 3. Apply anti-rust grease to the hook regularly.

4

P991109708AA

Stopper

Structural steel (Q235B); surface anti-rust coating; rigid design to limit the movement of stairs and guardrails, preventing excessive displacement due to vibration, complying with API Spec 4F.

1. Wear at the contact surface from repeated impact with moving parts; 2. Corrosion from outdoor moisture; 3. Bending deformation from excessive impact.

1. Apply anti-wear grease to the contact surface to reduce friction; 2. Clean the stopper monthly to prevent corrosion; 3. Inspect quarterly for bending, replacing the stopper if deformation occurs.

1

Z05010402038AA

Rotating table

High-strength structural steel (Q355B); flat tabletop with anti-slip texture; rotating mechanism with wear-resistant bearings; surface anti-rust coating; designed to bear a maximum load of 200kg, complying with API Spec 4F.

1. Anti-slip surface wear from tool placement and foot traffic; 2. Bearing wear from frequent rotation; 3. Corrosion from drilling fluids and outdoor moisture.

1. Avoid placing sharp or heavy tools directly on the tabletop; use a rubber mat for protection; 2. Lubricate the rotating mechanism quarterly with lithium-based grease; 3. Clean the tabletop daily and touch up anti-rust coating if needed.

1

Are Stairs (Z05010400285AA) and Stairs Ⅱ (Z05010400287AA) interchangeable? Can I use one to replace the other if damaged?

No, they are not interchangeable. Stairs (Z05010400285AA) are main access stairs, designed for heavy frequent use with a stronger load-bearing capacity (150kg/step) and longer length, connecting the rig’s main lower and upper platforms. Stairs Ⅱ are auxiliary, lighter in design, for secondary access to small auxiliary platforms (e.g., rotating table). Using them interchangeably will cause instability and safety hazards.

2

How often should I replace the anti-slip gear plate (Z05010500399AA) and safety pins (P6900062AA) to ensure safety?

Replacement cycles depend on usage frequency and environment: anti-slip gear plates should be replaced every 6-12 months (or sooner if the serrated texture is worn down to a smooth surface, reducing anti-slip performance). Safety pins (P6900062AA) should be replaced every 8-10 months, or immediately if the spring is weak, the pin is corroded, or wear exceeds 0.5mm. For rigs in wet/muddy environments, shorten cycles by 30%.

3

What should I do if the rotating table (Z05010402038AA) fails to rotate smoothly? How to avoid damaging the rotating mechanism?

If the rotating table is stuck, stop using it immediately—common causes are bearing wear or debris accumulation in the rotating mechanism. Clean the mechanism thoroughly with neutral detergent, remove debris, and lubricate the bearings with lithium-based grease (complying with API Spec 4F lubrication requirements). To avoid damage: never force rotation when stuck, lubricate quarterly, and avoid placing heavy tools that exceed the 200kg load limit on the tabletop.