Z05011200133AA & Z05011200134AA Bottom Assembly

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Z05011200133AA

Bottom assembly

High-strength structural alloy steel (Q355B); integrated welding forming; surface shot blasting + epoxy anti-corrosion coating; serves as the main load-bearing body of the bottom structure, connecting intermediate parts and auxiliary components.

1. Weld seam fatigue cracking from long-term high-load and continuous vibration; 2. Corrosion from drilling fluid splashes and outdoor humid environments; 3. Local deformation from uneven load distribution.

1. Inspect weld seams monthly using visual and ultrasonic flaw detection (complying with API Spec 8C § 5.4); repair immediately if cracks are found; 2. Clean surface weekly to remove drilling fluid residues, touching up anti-corrosion coating if peeling; 3. Ensure even load distribution during operation to avoid local stress concentration.

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Z05011200134AA

Bottom assembly

High-strength structural alloy steel (Q355B); integrated welding forming; surface shot blasting + epoxy anti-corrosion coating; matching Z05011200133AA, serving as an alternative or auxiliary bottom load-bearing body.

1. Wear at connection points from long-term friction with intermediate parts; 2. Corrosion from saltwater (coastal drill sites) or dust accumulation; 3. Deformation from accidental impact with drill site equipment.

1. Check connection points weekly for wear and tightness; lubricate with anti-rust grease to reduce friction; 2. For coastal drill sites, re-coat anti-corrosion coating every 6 months; 3. Use padding to protect the assembly during equipment movement to avoid impact damage.

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Z05011200132AA

Intermediate parts

High-strength alloy steel (40Cr); heat-treated for toughness and wear resistance; precision machined; connects bottom assembly and auxiliary components, transferring vertical and horizontal loads.

1. Wear at the contact surface from long-term vibration and load friction; 2. Corrosion from drilling fluid seepage and moisture; 3. Fatigue deformation from repeated load stress.

1. Inspect monthly for wear and deformation; replace if wear exceeds 0.3mm; 2. Clean contact surfaces before installation and apply anti-rust grease; 3. Avoid overloading beyond the rated load to prevent fatigue damage.

2

Z05011200132AA

Intermediate part, base

High-strength alloy steel (40Cr); heat-treated for toughness and load-bearing capacity; precision machined; base-type intermediate component, providing stable support for upper parts and transferring loads to the bottom assembly.

1. Local wear at the base contact surface from long-term load bearing; 2. Corrosion from dust and moisture accumulation at the bottom; 3. Cracking from uneven load or impact.

1. Check the base contact surface weekly for wear and debris; clean and smooth if needed; 2. Ensure the base is installed horizontally to avoid uneven load; 3. Inspect quarterly for cracks; replace immediately if found.

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P6013610AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined to match hoisting ropes, designed for bottom assembly lifting and connection.

1. Wear at the rope contact surface from long-term hoisting friction; 2. Fatigue cracking from repeated hoisting load stress; 3. Corrosion from drilling fluid and outdoor exposure.

1. Inspect before each hoisting operation for cracks or wear; replace if damaged; 2. Use hoisting ropes of matching specifications to avoid uneven friction; 3. Lubricate the contact surface with anti-rust grease after each use to reduce wear.

2

P6012208AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; used to connect the bottom assembly to intermediate parts or structural frames.

1. Wear at the connection bolt hole from long-term bolt friction; 2. Corrosion from moisture and drilling fluid splashes; 3. Deformation from improper hoisting force.

1. Check bolt holes monthly for wear; replace if the hole diameter exceeds 0.5mm; 2. Clean the pad eye surface regularly to remove corrosion and debris; 3. Ensure even hoisting force to avoid one-sided deformation.

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P6012208AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; identical to the above, serving as a spare or additional connection point.

1. Fatigue wear from long-term load bearing; 2. Corrosion from dust accumulation in the bolt hole; 3. Damage from improper bolt tightening (over-tightening leads to hole deformation).

1. Inspect quarterly for fatigue cracks using visual inspection; replace if found; 2. Clean the bolt hole monthly to remove dust and debris; 3. Use a torque wrench to tighten bolts to the specified torque.

4

P6042658AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; designed for heavy-load connection scenarios of the bottom assembly.

1. Wear at the contact surface from heavy-load friction; 2. Fatigue cracking from repeated heavy-load stress; 3. Corrosion from saltwater (coastal drill sites).

1. Inspect monthly for wear and cracks; replace if wear exceeds 0.4mm; 2. For coastal drill sites, re-coat anti-corrosion plating every 6 months; 3. Avoid exceeding the rated load (compliant with API Spec 8C) during use.

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P6042659AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; matching P6042658AA, serving as an auxiliary heavy-load connection point.

1. Wear at the bolt hole from long-term bolt rotation; 2. Corrosion from drilling fluid seepage; 3. Deformation from accidental impact during hoisting.

1. Check bolt holes weekly for wear and deformation; replace if damaged; 2. Clean the pad eye with diesel oil after contact with drilling fluid; 3. Use soft slings during hoisting to avoid impact.

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P6012209AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; used for connecting the bottom assembly to the base intermediate part.

1. Wear at the contact surface from long-term vibration; 2. Corrosion from moisture accumulation at the connection; 3. Cracking from uneven load distribution.

1. Inspect monthly for wear and cracks; replace if damaged; 2. Apply anti-rust grease to the contact surface monthly to reduce friction and corrosion; 3. Ensure the connection is tight to avoid uneven load.

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P6012857AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; auxiliary connection component for the bottom assembly, enhancing connection stability.

1. Wear from light-load long-term friction; 2. Corrosion from dust and humid air; 3. Deformation from improper installation.

1. Clean the surface monthly to remove dust and corrosion; 2. Ensure proper alignment during installation to avoid deformation; 3. Inspect quarterly for wear; replace if needed.

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P6013610AA

Connection pad eye

High-strength alloy steel (40CrNiMoA); heat-treated for high tensile strength and toughness; surface anti-corrosion plating; precision machined; identical to the first P6013610AA, serving as a spare for hoisting connection.

1. Wear at the rope contact surface from occasional hoisting use; 2. Corrosion from long-term storage if not maintained; 3. Damage from improper rope installation.

1. Inspect before each use (even if stored); replace if damaged; 2. Apply anti-rust grease and cover with a waterproof cloth during storage; 3. Ensure the rope is properly installed to avoid edge friction.

1

P6111749AA

Retaining pipe

High-strength seamless steel pipe (20#); heat-treated for toughness; surface anti-corrosion coating; used to fix and position auxiliary components of the bottom assembly, preventing displacement.

1. Wear at the inner hole from long-term component friction; 2. Corrosion from drilling fluid seepage; 3. Deformation from accidental impact.

1. Apply anti-rust grease to the inner hole monthly to reduce friction; 2. Clean the outer surface regularly to remove drilling fluid residues; 3. Avoid impact on the retaining pipe during maintenance operations.

2

P6219518AA

Bottom plate

High-strength structural steel (Q355B); precision machined; surface anti-corrosion paint; serves as the bottom support plate of Z05011200133AA, bearing vertical loads and protecting internal components.

1. Wear at the bottom surface from long-term contact with the ground or support; 2. Corrosion from moisture and dust accumulation; 3. Deformation from uneven load.

1. Inspect the bottom surface weekly for wear; replace if wear exceeds 1mm; 2. Clean the bottom surface monthly to remove dust and moisture; 3. Place a rubber pad under the bottom plate to reduce ground friction.

3

P9911001365AA

Diamond plate

High-strength steel (Q235B); diamond-patterned surface; surface anti-corrosion plating; used to enhance the bottom assembly’s surface wear resistance and prevent slipping during maintenance.

1. Wear of the diamond pattern from long-term foot traffic or component friction; 2. Corrosion from drilling fluid splashes; 3. Scratching from sharp objects.

1. Clean the surface weekly to remove debris; avoid sharp objects scratching the pattern; 2. Touch up anti-corrosion plating if peeling occurs; 3. Inspect quarterly for pattern wear; replace if the pattern is flattened.

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P9911001375AA

Stiffener

High-strength structural steel (Q355B); heat-treated for toughness; precision machined; welded to the bottom assembly frame to enhance structural rigidity and prevent deformation.

1. Weld seam cracking from long-term vibration; 2. Wear at the connection surface from load stress; 3. Corrosion from drilling fluid splashes.

1. Inspect weld seams monthly for cracks; repair immediately if found; 2. Clean the surface weekly to remove drilling fluid residues; 3. Avoid heavy impact on the stiffener to prevent deformation.

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P9911001376AA

Stiffener

High-strength structural steel (Q355B); heat-treated for toughness; precision machined; identical to P9911001375AA, serving as an auxiliary stiffener for the bottom assembly frame.

1. Fatigue wear from long-term load stress; 2. Corrosion from dust and moisture accumulation; 3. Deformation from uneven load distribution.

1. Inspect quarterly for fatigue deformation; replace if bent; 2. Clean the surface monthly to remove dust and moisture; 3. Ensure even load distribution to avoid local stress on the stiffener.

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P9911001377AA

Stiffener

High-strength structural steel (Q355B); heat-treated for toughness; precision machined; auxiliary stiffener, enhancing the connection strength between the bottom plate and the frame.

1. Wear at the contact surface with the bottom plate; 2. Corrosion from moisture seepage between the stiffener and bottom plate; 3. Weld seam cracking from vibration.

1. Check the contact surface monthly for wear and debris; clean if needed; 2. Apply anti-rust grease between the stiffener and bottom plate to prevent moisture seepage; 3. Inspect weld seams monthly for cracks.

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P9911001378AA

Stiffener

High-strength structural steel (Q355B); heat-treated for toughness; precision machined; matching P9911001377AA, further enhancing the bottom assembly’s structural stability.

1. Wear from long-term vibration and friction; 2. Corrosion from drilling fluid splashes; 3. Deformation from accidental impact during equipment movement.

1. Clean the surface weekly to remove drilling fluid residues; 2. Use padding to protect the stiffener during equipment movement; 3. Inspect quarterly for deformation; replace if needed.

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P9911001379AA

Checked plate

High-strength steel (Q235B); checked surface (anti-slip design); surface anti-corrosion coating; used on the bottom assembly’s operating surface to prevent slipping during maintenance and operation.

1. Wear of the checked surface from long-term foot traffic; 2. Corrosion from drilling fluid and outdoor moisture; 3. Scratching from sharp tools or components.

1. Clean the surface weekly to remove debris; avoid sharp tools scratching the checked surface; 2. Touch up anti-corrosion coating if peeling occurs; 3. Inspect quarterly for anti-slip performance; replace if the checked surface is worn flat.

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P9911001380AA

Bottom plate

High-strength structural steel (Q355B); precision machined; surface anti-corrosion paint; bottom support plate for Z05011200134AA, bearing vertical loads and protecting internal components.

1. Wear at the bottom surface from long-term contact with the support; 2. Corrosion from dust and moisture accumulation; 3. Deformation from heavy-load impact.

1. Inspect the bottom surface weekly for wear; replace if wear exceeds 1mm; 2. Clean the bottom surface monthly to remove dust and moisture; 3. Avoid heavy objects falling on the bottom plate to prevent impact deformation.

1

P6001559AA

Arrow

High-quality engineering plastic (ABS); corrosion-resistant and wear-resistant; bright color (red/yellow) for clear visibility; glued or bolted to the bottom assembly, indicating installation and load direction.

1. Fading from long-term outdoor sunlight exposure; 2. Peeling or falling off from vibration; 3. Scratching from sharp objects or drilling fluid splashes.

1. Inspect monthly for fading, peeling, or damage; replace if the arrow is unclear; 2. Reinforce the connection (glue or bolts) quarterly to prevent falling off; 3. Clean the surface with a soft cloth to avoid scratching.

2

P6001559AA

Arrow

High-quality engineering plastic (ABS); corrosion-resistant and wear-resistant; bright color for clear visibility; identical to the above, indicating the installation direction of Z05011200134AA bottom assembly.

1. Fading from sunlight and drilling fluid exposure; 2. Damage from accidental impact during maintenance; 3. Peeling from moisture seepage between the arrow and assembly surface.

1. Replace the arrow if fading affects visibility (usually every 6-12 months); 2. Protect the arrow with padding during maintenance to avoid impact; 3. Clean the assembly surface before installing the arrow to prevent moisture seepage.

1

Can Z05011200133AA Bottom Assembly and Z05011200134AA Bottom Assembly be used interchangeably? Are their parts compatible?

Z05011200133AA and Z05011200134AA Bottom Assemblies are designed for matching use (not full interchangeability), but most of their auxiliary parts (e.g., P6001559AA Arrow, P6013610AA Connection Pad Eye) are fully compatible. However, core structural parts (e.g., their integrated frames) have slight differences in connection positions and load-bearing specifications, so they cannot be fully interchangeable. Using them interchangeably without confirmation will cause connection mismatch, load concentration, and structural damage. For specific compatibility, confirm the part model with our technical team.

2

What is the recommended service life of key reinforcement parts (e.g., stiffeners, bottom plates), and how to extend it?

Under normal drill site operation conditions, the recommended service life of stiffeners (e.g., P9911001375AA) and bottom plates (e.g., P6219518AA) is 24 months. To extend their service life: 1. Inspect weld seams monthly for cracks and repair in time; 2. Clean surfaces weekly to remove drilling fluid residues and dust, maintaining anti-corrosion performance; 3. Avoid heavy impact and uneven load, and use padding to reduce friction with the ground or other components; 4. Touch up anti-corrosion coating every 6 months for coastal or high-humidity drill sites.

3

How to ensure that the procured parts are compatible with Z05011200133AA/Z05011200134AA Bottom Assemblies, especially for parts with the same name but different models?

To ensure compatibility, the most critical step is to use the original product model (e.g., P6012208AA vs. P6012209AA Connection Pad Eye) as the procurement basis—models are uniquely matched to the bottom assemblies, and even parts with the same name but different models have differences in dimensions or load-bearing capacity. If you are unsure, provide the following information: bottom assembly model (Z05011200133AA/Z05011200134AA), part name, and installation position. Our technical team will confirm the correct part model for you, avoiding procurement errors that lead to installation failure or safety hazards.