What is the manufacturing tolerance for OD size?

Tolerances vary by size, ranging from +1.20mm for sizes up to 3 1/2 inches to +6.40mm for sizes over 9 1/2 inches.

Which international trade terms are available?

We offer FOB, CFR, CIF, FCA, and EXW as International Commercial Terms.

What is the nearest shipping port?

The nearest ports are Tianjin and Beijing.

Good Quality Drill Collar for Borehole Drilling Rig

Name: Good Quality Drill Collar for Borehole Drilling Rig
Brand: Glorytek Industry (Beijing) Co., Ltd.
SKU: 782856532

Beijing, ChinaGlorytek Industry (Beijing) Co., Ltd.

US$1,000.00

1 Piece

Product profile

Customization

Available

Model

Glnc35

Inner Length

82.6mm

Model NO.

Drill Collar

Inner Diameter

82.15mm

Transport Package

Normal Sea Packing

Specification

chromium-molybdemum alloy steel

Trademark

Glorytek

Origin

China

Production Capacity

3000PCS/Month

Key features

Premium Alloy Material: Made from 4145H modified chromium-molybdenum alloy steel per Spec.7 and SY/T5144.

Precision CNC Machining: All threads machined with CNC lathes featuring double-shouldered and special thread designs.

Durable Thread Protection: All connections equipped with pressed steel thread protectors for safety.

Corrosion Resistant Coating: Threads treated with phosphating, copperizing, or cold working processes.

Wide Size Range: Available in OD sizes from 3 1/2 inches to over 9 1/2 inches with precise tolerances.

Stress-Relief Design: Features stress-relief slots at connections to enhance structural integrity.

Fast Peak Season Delivery: Average lead time within 15 workdays during peak seasons.

Flexible Payment Terms: Accepts LC, T/T, and Western Union for secure international transactions.

Company profile

Glorytek Industry (Beijing) Co., Ltd.

Beijing, China

Business Type: Manufacturer/FactoryExport Year: 2010-08-10Nearest Port: Tianjin, BeijingAverage Response Time: ≤5.29hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, CFR, CIF, FCA, EXW

AI-Powered supplier vetting

SummaryGlorytek Industry (Beijing) Co., Ltd. is identified as a Chinese manufacturer/factory producing drilling rigs, piling machinery, and drilling auxiliaries. It demonstrates broad customization capability, has introduced new products within the past year, and provides OEM services for recognized brands. Export activity is substantial, with 71%–90% of sales from exports and 14 years of exporting experience. The supplier reports overseas warehouses, an overseas showroom, in-stock capability, maintenance and training services, and a documented customer-complaint procedure with records. However, quality assurance and traceability statuses are unknown, quality-control test equipment is reported as zero, and the R&D team consists of one engineer. Financial records are indicated for 2021–2023, but financial performance or credibility cannot be assessed from the provided information. No certification information or specific customer cases is provided.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and operates as a limited company in Beijing, China. This supports classification as a direct manufacturing supplier rather than only a trading or service intermediary.

After-Sales capabilityThe supplier describes after-sales service as a support for business cooperation, offers maintenance and training, and has overseas warehouse and showroom capabilities. It also has a clear customer-complaint procedure with follow-up records, although its broader service-assessment and corrective-action procedures lack written records.

R&D capabilityThe supplier reports having launched new products within the past year and offers extensive product customization. However, it has only one R&D engineer and no available SDK, so the evidence supports some product-development activity but not a strong or broad innovation infrastructure.

Production capacityAs a manufacturer/factory, the supplier lists multiple drilling-rig, piling-machinery, and drilling-auxiliary product categories, reports in-stock capability, and states that it has 50 qualified service suppliers. Overseas warehouse and showroom capabilities are also reported. Nevertheless, the quantity and size of quality-control test equipment is stated as zero, while production capacity and manufacturing scale are not quantified.

Customization capabilityThe supplier explicitly provides customization from samples, designs, minor customization, full customization, and flexible customization. This is consistent across the two relevant slices and indicates broad customization coverage.