About Linqing City Ruilong Drill Co., Ltd. - Drilling Machines & Tools Supplier in China

China‑based Linqing City Ruilong Drill Co., Ltd. lists 31 active products covering drilling machines, tools and related pipe fittings. The catalogue includes DTH bits, anchor drill rods, high‑efficiency drill rods, various PDC cutter bits, carbide button bits, and a stainless steel drilling pipe classified under HS code 7304.41. Products are described with material specifications such as stainless steel E75 grade for the pipe and various PDC and carbide compositions for the bits. The list also contains specialized items like the Api 11ax standard sucker rod pump and mining‑grade spiral drill rods.

The supplier’s offerings span water‑well drilling rigs, coal‑mining drill rods, rock‑drilling tools, and non‑coring PDC bits. Several items reference standard dimensions, for example the 32 mm button bit and 38 mm carbide button bits, while others denote grade designations like S135 for water‑well drill pipe. The product set reflects typical equipment used in underground mining, oil‑field exploration, and agricultural irrigation projects. All items are presented without explicit certifications, leaving verification to the buyer.

Product Range and Specialties of Linqing City Ruilong Drill Co., Ltd.

The catalogue comprises DTH (down‑the‑hole) bits, three‑wing step bits for water wells, PDC (polycrystalline diamond compact) cutter bits, carbide button bits, and a range of drill rods with threaded joints, tapered extensions and high‑steel variants. It also includes a stainless steel drilling pipe (HS 7304.41) made from E75 grade stainless steel, and larger mining equipment such as spiral drill rods and a sucker‑rod pump.

In the drilling tools sector, DTH bits are commonly supplied in ISO 9001‑controlled factories and conform to API 7‑1 standards for oil‑field use. PDC cutter bits typically meet ISO 16368 specifications with diamond concentrations of 80‑90 % and cutter diameters from 30 mm to 90 mm. Carbide button bits often carry a hardness of 1800‑2000 HV and are graded by rock hardness (Mohs 6‑8). Stainless steel pipes for drilling are usually produced to ASTM A312 TP 316L or Chinese GB/T 12459, with wall thicknesses ranging 2 mm‑6 mm for water‑well applications.

Trade and Export Information - Linqing City Ruilong Drill Co., Ltd.

China is a major exporter of drilling equipment, with shipments frequently destined for Africa’s mining sector, the Middle East’s oil‑field services, and South America’s water‑well development projects. HS chapter 84 (machinery) and chapter 73 (metal products) cover most of the listed items, including the 7304.41 pipe and various drill bits classified under HS 8467 or 8468 depending on design.

Buyers usually require ISO 9001 quality‑management certification, API product certifications for oil‑field bits, and material test reports (MTR) for stainless steel pipe. Export logistics commonly use 20‑ft or 40‑ft containers, with packaging in wooden crates or steel drums, and Incoterms such as FOB Shanghai or CIF Lagos are typical. Chinese manufacturers often provide pre‑inspection reports from SGS or Bureau Veritas to satisfy import‑country regulators.

Sourcing from Linqing City Ruilong Drill Co., Ltd. - Buyer Guidance

When sourcing from Linqing City Ruilong Drill Co., Ltd., request the latest ISO 9001 certificate and, for oil‑field bits, API 7‑1 or API 7‑2 test reports. Material certificates for the E75 stainless steel pipe should specify chemical composition and mechanical properties in accordance with GB/T 12459.

What types of drill bits does the supplier offer?

The catalogue lists DTH bits, three‑wing step bits for water wells, PDC cutter bits, carbide button bits, and non‑coring PDC bits, each sized from 32 mm to 43 mm in diameter. Each bit type is described with its intended drilling application, such as rock, coal or water‑well use.

Are the stainless steel drilling pipes certified to any standard?

The pipe is described as stainless steel E75 grade and falls under HS 7304.41; buyers should request a material test report referencing ASTM A312 or GB/T 12459 to confirm compliance. The report should include chemical composition, tensile strength and wall‑thickness measurements.

Which certifications should a buyer request for the drilling equipment?

Typical requirements include the supplier’s ISO 9001 quality‑management certificate, API product certifications for oil‑field bits, and material certificates for steel components. Additional test reports such as hardness or impact testing may be requested for carbide and PDC bits.

What is the typical minimum order quantity for the drill rods?

For standard drill rods the usual MOQ is one 20‑ft container, roughly 1 000 kg of product. Smaller quantities can be arranged for sample evaluation, but larger orders benefit from container‑load efficiency.

How are the products packaged for international shipment?

Items are packed in wooden crates or steel drums, with pipe bundles wrapped in protective film to prevent corrosion. Containers are loaded according to standard 20‑ft or 40‑ft specifications, allowing efficient stowage.

What HS codes apply to the supplier’s products?

Drill bits and related tools generally use HS 8467 or 8468, while the stainless steel drilling pipe is classified under HS 7304.41. These codes are used for customs clearance in most importing countries.

What lead time can buyers expect?

Lead times are typically 30‑45 days from order confirmation for standard items, with longer periods for custom‑spec drill bits or large pipe orders. Suppliers usually confirm exact timing after receiving detailed specifications and a purchase order.