TQ340-35Y Size Adapters Heavy-Duty Guide

1

Inserts (107-102)

12AZ-107.6

WC-Co Cemented Carbide (94% WC, 6% Co)

1. Abrasive wear from pipe thread friction and drilling debris; 2. Thermal fatigue from rapid temperature fluctuations during make-up

1. Pre-clean pipe surfaces to remove scale/debris before clamping; 2. Monitor insert temperature during continuous operation (keep below 120°C per API 7K Clause 8.5)

2

Dies (89-114)

12AZ-110.2

Alloy Steel with Carburized Surface (HRC 58-62)

1. Adhesive wear from improper pipe surface contact; 2. Stress cracking from over-torque beyond 12kN.m rating

1. Ensure die contact area with pipe is ≥80% of total surface; 2. Use torque monitoring systems to avoid exceeding rated capacity

3

Dies (73-78)

12AZ-110.1

Alloy Steel with Carburized Surface (HRC 58-62)

1. Erosive wear from high-velocity drilling fluid splash; 2. Fatigue failure from cyclic clamping/unclamping

1. Install protective fluid shields around die assemblies; 2. Inspect die surface for micro-cracks monthly via magnetic particle testing

4

Dies (121-156)

12AZ-110.3

Alloy Steel with Carburized Surface (HRC 58-62)

1. Wear from mismatched pipe diameter (exceeding die range); 2. Corrosion from hydrogen sulfide (H₂S) in sour well environments

1. Verify pipe diameter matches die range before operation; 2. Use H₂S-resistant coating (per NACE MR0175) for sour well applications

5

Piston

12AB-60

316L Stainless Steel with PTFE Seals

1. Seal degradation from contaminated hydraulic fluid; 2. Cylinder wall scuffing due to misalignment

1. Filter hydraulic fluid to 5μm precision and replace every 500 operating hours; 2. Check piston rod alignment (tolerance ±0.02mm) during maintenance

6

Liner

12AB-55

42CrMo Alloy Steel with Nitrided Surface

1. Corrosive wear from acidic drilling fluid; 2. Abrasion from metal particles in hydraulic fluid

1. Test hydraulic fluid pH monthly (maintain 7.5-8.5); 2. Install magnetic debris collectors in hydraulic lines

7

Spring

12AB-11

60Si2Mn High-Elasticity Steel

1. Elastic fatigue from repeated compression cycles; 2. Stress corrosion cracking in high-humidity environments

1. Limit compression cycles to 10,000 per spring (replace proactively); 2. Apply anti-corrosion oil (ISO VG 32) after each washdown

8

Part

12AB-56

304 Stainless Steel

1. Pitting corrosion from saltwater exposure; 2. Wear from relative movement with mating components

1. Rinse with fresh water after offshore operation; 2. Apply molybdenum disulfide lubricant to mating surfaces

9

Piston

12AB-58

316L Stainless Steel with PTFE Seals

1. Seal extrusion from excessive hydraulic pressure; 2. Wear from misaligned cylinder bore

1. Maintain hydraulic pressure within 15-20 MPa (rated range); 2. Inspect cylinder bore for ovality (tolerance ±0.01mm) annually

10

Part

12AB-51

40CrNiMoA Alloy Steel

1. Torsional fatigue from torque transmission; 2. Wear from inadequate lubrication

1. Use high-pressure grease (NLGI Grade 2) every 200 operating hours; 2. Check torque transmission efficiency monthly (target ≥95%)

11

Pin

12AQ-09

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Corrosion from drilling fluid intrusion

1. Ensure pin is fully seated in bushing (no lateral movement); 2. Replace sealing washers during each pin inspection

12

Piston

12AY-1.17

316L Stainless Steel with PTFE Seals

1. Thermal degradation of seals from high-temperature operation; 2. Wear from abrasive particles in hydraulic fluid

1. Use high-temperature seals (rated to 150°C) for deep well applications; 2. Replace hydraulic filter element every 300 operating hours

13

Part

12AY-1.9

40Cr Alloy Steel

1. Impact wear from sudden load changes; 2. Fatigue cracking from cyclic stress

1. Avoid rapid acceleration/deceleration of tong operation; 2. Conduct ultrasonic testing for fatigue cracks every 6 months

14

Inserts (132.5-128)

12AZ-1*⑴

WC-Co Cemented Carbide (94% WC, 6% Co)

1. Chipping from excessive clamping force; 2. Wear from non-uniform pipe surface contact

1. Set clamping force to 80-90% of maximum rated (per tong manual); 2. Grind uneven pipe surfaces before clamping

15

Part (φ60-16KN.m)

12AZ*⑴

42CrMo Alloy Steel

1. Overload failure from exceeding torque rating; 2. Corrosion from H₂S in sour wells

1. Never use for torque applications exceeding 16kN.m; 2. Apply NACE MR0175-compliant anti-corrosion coating for sour service

16

Screw (M10*25)

12AZ-90

304 Stainless Steel

1. Thread galling from improper tightening; 2. Corrosion from saltwater exposure

1. Use torque wrench (tighten to 25 N·m) and anti-seize compound; 2. Replace screws if thread damage exceeds 5% of thread depth

17

Screw (M10*20)

12AZ-91

304 Stainless Steel

1. Fatigue failure from vibration; 2. Corrosion from drilling fluid splashing

1. Use lock washers to prevent vibration loosening; 2. Clean and inspect threads weekly for corrosion

18

Part

XQ12YA.02

QT500-7 Ductile Iron

1. Impact damage from pipe handling collisions; 2. Wear from contact with moving components

1. Install rubber bumpers on tong housing to mitigate impacts; 2. Check contact surfaces for wear (replace if wear depth >0.5mm)

19

Part (XQ140/20Y Compatible)

XYQ3C.Z-21

40CrNiMoA Alloy Steel

1. Torsional fatigue from torque transmission; 2. Corrosion from harsh oilfield environments

1. Operate within 12-20kN.m torque range (compatible with XQ140/20Y); 2. Conduct annual corrosion inspection and touch-up coating

20

Part

12AB-62

304 Stainless Steel

1. Pitting corrosion from chemical contaminants in drilling fluid; 2. Wear from relative motion with adjacent parts

1. Test drilling fluid for chemical compatibility quarterly; 2. Apply dry film lubricant to reduce friction

1

Size Adapter (5 1/2"-13 3/8")

TQ340-35 Ⅱ 56*⑴

42CrMo Alloy Steel (Quenched & Tempered)

1. Wear from pipe diameter transitions and clamping pressure; 2. Fatigue cracking from cyclic torque application

1. Match adapter size strictly to pipe diameter (no cross-use); 2. Inspect adapter for fatigue cracks via ultrasonic testing every 3 months

1

Part

DT6-2

35CrMo Alloy Steel

1. Wear from relative movement in compact assembly; 2. Corrosion from limited access for maintenance

1. Use needle nose tools for precision lubrication (NLGI Grade 2 grease); 2. Inspect via borescope monthly for hard-to-reach areas

2

Part

DT6-4

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Fatigue wear from cyclic operation

1. Ensure even load distribution during installation; 2. Limit continuous operation to 2-hour intervals (allow cool-down)

3

Part

DT6-8

QT450-10 Ductile Iron

1. Impact damage from pipe handling in tight spaces; 2. Corrosion from drilling fluid pooling

1. Use guide rails to align pipes during insertion; 2. Drill small drainage holes to prevent fluid pooling

4

Part

DT6-6

QT450-10 Ductile Iron

1. Wear from contact with moving components; 2. Stress cracking from thermal expansion in high-temperature wells

1. Apply high-temperature lubricant (rated to 150°C); 2. Check for thermal stress cracks quarterly

5

Part

DT6-5

304 Stainless Steel

1. Pitting corrosion from saltwater exposure; 2. Wear from abrasive particles in confined spaces

1. Rinse with fresh water after offshore use; 2. Install miniaturized filters in fluid lines

6

Part

DT6-7

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Fatigue failure from vibration in deviated wells

1. Test drilling fluid additives for compatibility; 2. Install vibration dampeners for deviated well operations

7

Part

Z6-124

40Cr Alloy Steel

1. Torsional fatigue from torque transmission; 2. Wear from inadequate lubrication

1. Lubricate every 150 operating hours with high-pressure grease; 2. Check torque transmission efficiency monthly

8

Part

Z6-120

40Cr Alloy Steel

1. Wear from relative motion with mating parts; 2. Corrosion from drilling fluid intrusion

1. Replace sealing rings during each maintenance cycle; 2. Clean mating surfaces before reassembly

9

Part

Z6-10

QT450-10 Ductile Iron

1. Impact wear from sudden pipe movement; 2. Fatigue cracking from cyclic load

1. Operate tongs with gradual speed changes; 2. Conduct magnetic particle testing for cracks every 6 months

10

Part

Z6-15

QT450-10 Ductile Iron

1. Corrosion from harsh well environments; 2. Wear from contact with pipe surfaces

1. Apply anti-corrosion coating annually; 2. Inspect contact surfaces for wear (replace if wear >0.3mm)

11

Bearing (42206)

Z6-11

GCr15 Bearing Steel (Sealed Type)

1. Dry friction from lubrication loss; 2. Damage from foreign particles entering seal

1. Use sealed bearings with lifetime lubrication (avoid re-greasing in tight spaces); 2. Inspect seal integrity monthly

12

Part (62)

Z6-12

35CrMo Alloy Steel

1. Shear failure from overloading; 2. Fatigue wear from cyclic stress

1. Operate within rated load (62kN); 2. Replace proactively after 5,000 operating hours

13

Support Ring

Z6-13

PTFE-Reinforced Nylon

1. Abrasive wear from metal-to-plastic contact; 2. Thermal degradation from high temperatures

1. Maintain operating temperature below 120°C; 2. Inspect for deformation (replace if out-of-round by >0.2mm)

14

Part

Z6-14

304 Stainless Steel

1. Corrosion from acidic drilling fluid; 2. Wear from vibration in deviated wells

1. Test drilling fluid pH monthly (maintain 7.5-8.5); 2. Install vibration dampeners

15

Screw (M8*1)

Z6-39

304 Stainless Steel

1. Thread stripping from over-tightening; 2. Corrosion from drilling fluid splashing

1. Tighten to 15 N·m (torque wrench required); 2. Apply anti-seize compound before installation

16

Inserts

Z6-73

WC-Co Cemented Carbide

1. Wear from small-diameter pipe thread friction; 2. Chipping from uneven clamping

1. Ensure clamping force is uniform (use pressure sensors); 2. Replace inserts in sets to avoid uneven wear

17

Part (14*40)

Z6-69

35CrMo Alloy Steel

1. Wear from relative movement; 2. Corrosion from fluid intrusion

1. Apply lubricating oil every 100 operating hours; 2. Check sealing integrity during each inspection

1

ZQ203-100 Power Tongs Replacement Part

ZQ203-100

40CrNiMoA Alloy Steel

1. Fatigue wear from continuous operation; 2. Corrosion from H₂S in sour wells

1. Rotate parts in spare inventory every 6 months (prevent static corrosion); 2. Use NACE MR0175-compliant materials for sour service

2

XYQ3B Power Tongs Replacement Part

XYQ3B

QT500-7 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from contact with moving components

1. Install impact-absorbing pads; 2. Inspect contact surfaces monthly for wear

3

XYQ6G Power Tongs Replacement Part

XYQ6G

35CrMo Alloy Steel

1. Shear failure from over-torque; 2. Corrosion from drilling fluid

1. Use torque limiters to prevent over-torque; 2. Replace sealing components quarterly

4

XQ3F Power Tongs Replacement Part

XQ3F

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install high-efficiency filters in fluid systems

5

XYQ6B Power Tongs Replacement Part

XYQ6B

40Cr Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from harsh environments

1. Limit continuous operation to 3-hour intervals; 2. Apply anti-corrosion coating annually

6

XQ89/3YC Power Tongs Replacement Part

XQ89/3YC

42CrMo Alloy Steel

1. Overload failure from exceeding rated torque; 2. Wear from high-speed rotation

1. Operate within 3YC-rated torque range; 2. Inspect rotational components for runout (tolerance ±0.02mm)