Steel Body PDC Bit CZ-F1M (Overlay Welded)

High-Abrasion Resistance Steel Body PDC Drill Bit for Water Well and Pile Foundation Drilling

Product Overview & Description

The CZ-F1M Steel Body PDC Bit represents a breakthrough in drilling economy and durability. By utilizing advanced oxy-acetylene fusion welding technology, this drill bit deposits a thick, ultra-hard spherical cast tungsten carbide overlay onto key wear areas. This innovative process delivers an abrasion resistance and wear life equivalent to premium matrix body bits, while retaining the superior impact toughness, customizable geometry, and cost-effectiveness of a high-strength steel core.

Whether facing high-abrasive formations or gravel-interbedded layers, the CZ-F1M ensures higher ROP (Rate of Penetration), stable running, and significantly fewer trips.

Features & Outstanding Advantages

• Premium Overlay Technology: The specialized overlay consists of spherical tungsten carbide (content $\geqslant 45\%$) and a nickel-based self-fluxing alloy. With a weld thickness of 2.0–3.5 mm and an extreme hardness of HRC 58–65, it provides unparalleled protection against harsh abrasive wear.

• 360° Full Protection Zones:

  • Blade Surfaces: Specifically armored to resist severe erosion caused by high-velocity rock cuttings.

  • Full Gauge Band: Prevents gauge wear, maintaining precise borehole diameter and eliminating borehole shrinkage.

  • Flow Channel Inlets & Outlets: Reinforced to prevent turbulent sand abrasion and permanent channel deformation.

• Tailored Cutting Profiles: Available in standard cutting teeth sizes (1308, 1313, 1613, 1913) with customizable tooth profiles including flat teeth, spherical teeth, Mercedes-shaped teeth, and chisel teeth to match specific geological challenges.

Application Scope

The CZ-F1M is engineered to conquer high-abrasive, soft to medium-hard formations, including:

• Quartz sandstone & weathered gravel

• Sand-gravel interbeds and flint layers

• Ideal Drilling Sectors: Water well drilling, pile foundation construction, shallow oil/gas exploitation, and mine drainage drilling.

Technical Specifications (Parameter Table)

Technical Parameter	Specification / Standard
Bit Type	Steel Body PDC Bit (Overlay Welded Type)
Model	CZ-F1M
Overlay Material	Spherical Tungsten Carbide ($\geqslant 45\%$) + Nickel-based Self-fluxing Alloy
Weld Layer Thickness	2.0 mm – 3.5 mm
Surface Hardness	HRC 58 – 65
PDC Cutter Sizes Available	1308 / 1313 / 1613 / 1913
Optional Tooth Profiles	Flat, Spherical, Mercedes-shaped, Chisel teeth
Connection Thread	API Standard (REG / IF based on bit size)

Product Comparison: Overlay Welded Steel Body vs. Standard Bits

Feature / Benefit	CZ-F1M (Overlay Welded Steel Body)	Standard Steel Body PDC Bit	Matrix Body PDC Bit
Abrasion Resistance	⭐⭐⭐⭐⭐ (Equivalent to Matrix)	⭐⭐⭐	⭐⭐⭐⭐⭐
Impact Resistance	⭐⭐⭐⭐⭐ (High Toughness Core)	⭐⭐⭐⭐⭐	⭐⭐⭐
Abrasive Formations	Best for Quartz/Gravel Interbeds	Limited (Wears faster)	Excellent
Value / Cost Ratio	🏆 Excellent (Matrix life at Steel price)	Good	Expensive
Refurbishment Capability	High (Re-weldable & Cutter replaceable)	Medium	Low

Frequently Asked Questions (FAQ)

Q1: What makes the CZ-F1M overlay welded bit better than a standard steel body bit?

A: A standard steel body bit can wear out quickly when hitting quartz or sand-gravel layers. The CZ-F1M solves this by adding a 2.0–3.5mm thick tungsten carbide coating (HRC 58-65) onto the blades and gauge. It gives you the long life of a matrix bit but keeps the high impact resistance of steel, meaning it won’t crack easily in fractured formations.

Q2: Can this PDC bit be customized for our specific formation?

A: Yes, absolutely. We offer multiple cutter sizes (1308, 1313, 1613, 1913) and different cutter profiles. For example, we recommend Mercedes-shaped or chisel teeth for harder, scraping formations to maximize ROP, and standard flat teeth for rapid soft-rock shearing.

Q3: Does CZDRILL offer rebuilding or maintenance services for these bits?

A: Yes. Because of its premium steel base and welded design, the CZ-F1M is highly repairable. We provide customized cutter replacement and hardfacing re-welding services to help our B2B clients maximize the service life of every single bit, drastically lowering your total drilling costs.