do you agree sample order?

Yes, we are welcome your sample order to testing our quality.

Does your drill pipe have rust prevention?

Yes, every drill pipe will be with the rust prevention by paint or anti-corrosive oil before shipping and its thread surface will be nitrided.

do you have after-sale service and warranty service?

Any quality or quantity problem once confirmed, we will be compensate you the same. Any question or problem we will be reply you within 24 hours.

How about your minimum order quantity?

At least 10 pieces.Small orders also can accept.

3 1/2 Inch Dz50 R780 Steel API Standard Down-The-Hole Water Well Drill Rod

Name: 3 1/2 Inch Dz50 R780 Steel API Standard Down-The-Hole Water Well Drill Rod
Brand: Shijiazhuang Weilida Prospecting Machinery Co., Ltd.
SKU: 1997315855

Hebei, ChinaShijiazhuang Weilida Prospecting Machinery Co., Ltd.

US$58.00

5-99 Pieces

US$48.00

100+ Pieces

Sample price:US$66.00/piece.Request sample

Product profile

Customization

Available

Standard

RoHS, BS, DIN, JIS, AISI

Length

1m-9m

Model NO.

DTH water well drill pipe

Usage

Oil Mining, Coal Mining, Well Drilling, Ore Mining

Material

Carbon Steel

Thread Type

2 3/8" API Reg, 3 1/2" API Reg (API Thread, Custom

Upset Type

Iu, EU, Ieu

Product Technology

Friction Welding, Nitrading, Upsetting

Product Name

3 1/2 Inch Dz50 R780 Steel API Standard Drill Pipe

Transport Package

Bundle

Specification

from 2 3/8" to 6 5/8"(50-168mm)

Trademark

WEILIDA

Origin

China

Production Capacity

100000 Pieces

Key features

High Strength Material: Made from high-quality alloy seamless pipe R780, E75, X95, G105, S135.

Rust Prevention: Anti-corrosive oil or paint coating and nitrided thread surface for durability.

24/7 Technical Support: Engineers available online 24 hours a day with 24-hour reply time.

Flexible MOQ: Minimum order quantity is only 10 pieces; small orders are accepted.

Fast Delivery: 10-20 days for in-stock items; 20-30 days for non-stock items based on quantity.

Quality Assurance: Third-party testing accepted; compensation provided for confirmed quality issues.

Company profile

Shijiazhuang Weilida Prospecting Machinery Co., Ltd.

Hebei, China

Business Type: Manufacturer/FactoryExport Year: 2022-06-20Nearest Port: TianjinAverage Response Time: ≤9.13hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryShijiazhuang Weilida Prospecting Machinery Co., Ltd. is identified as a Chinese manufacturer/factory and limited company producing drill pipes, drilling tools, drill rigs, and related components. Evidence indicates an established operation founded in 1988, with an approximately 13,000-square-meter factory, 80 employees, three production lines, CNC and friction-welding equipment, and testing capability. The supplier reports ISO 9001 and ISO 14001 certifications, export capability, broad international markets, and stated lead times of within 15 workdays off-season and one month during peak season. It can produce multiple national and international standard specifications and design special products to customer requirements. However, the provided information does not substantiate after-sales service processes, customer case references, or financial credibility. Innovation capability is supported only by limited evidence of R&D personnel and product-design activity.

Supplier typeThe supplier is described as both a trade company in one record and a Manufacturer/Factory in another. Its product, factory, address, and business descriptions consistently support that it operates as a manufacturing supplier specializing in drilling machinery and tools, although the records contain a classification inconsistency.

CertificationsThe supplier reports ISO 9001 and ISO 14001 management-system certifications. Its company description also states that a quality management system was established in accordance with ISO 9001 and is operated through formal personnel training.

R&D capabilityThe supplier reports 6–10 years of total R&D engineer experience and states that it can design and manufacture special drill-pipe and drilling-tool specifications. It also describes efforts to enhance product technical content, providing positive but limited evidence of innovation capability.

Production capacityProduction capability is supported by three production lines, a 13,000-square-meter modern factory, 80 employees, CNC lathes, friction-welding and pipe-end processing equipment, complete production facilities, and a product range covering drill pipes, drilling tools, rigs, and related components. The supplier also reports quality-control personnel and broad export-market coverage.

Customization capabilityThe supplier explicitly states that it can manufacture various national, Russian, American, and European standard products and can design and produce special specifications according to customer needs. It also indicates that mechanical-performance testing of drilling tools can be conducted as required.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a professional manufacturer.

Q:How long is your delivery time?

Generally it is 10~20 days if the goods are in stock. or it is 20~30 days if the goods are not in stock, it is according to quantity.

Q:Where is your factory located in?

Our factory is located in Lu Jiazhuang Industry Zone, JIN ZHOU city, HEBEI province, China.

Q:What methods of payment are accepted?

We agree T/T, L/C,One touch.

Q:What about the shipment?

Our usual loading port is Xingang port in Tianjin ,main port in north of China. The goods will be packed into bundle as 3*3,4*4 etc,black painting and thread protectors.