How long is the lead time?

The average lead time is within 15 workdays for both peak and off-peak seasons.

Is customization available?

Yes, we offer full customization, minor customization, and flexible customization from samples or designs.

What certifications do you have?

We have obtained API 7K certification and ISO international quality certification.

API Casing Oil Drilling Straight Joint Coupling Lifting Sub Circulating Sub

Name: API Casing Oil Drilling Straight Joint Coupling Lifting Sub Circulating Sub
Brand: DONGYING LIANHUI PETROLEUM TECHNOLOGY CO.,LTD
SKU: 2075804582

Shandong, ChinaDONGYING LIANHUI PETROLEUM TECHNOLOGY CO.,LTD

US$1,700.00

1-99 Pieces

US$1,200.00

100+ Pieces

Sample price:US$1000.00/piece.Request sample

Product profile

Customization

Available

Manufacturing Process

Forging

Surface Treatment

Spray-Paint

Model NO.

Circulating Sub

Operation Pressure

Atmospheric Pressure

Material

Cast Steel

Product Name

Circulating Sub

Color

Customer's Requirements

Certificate

API 7-1 and ISO9001

Application

Energy & Mining/Petroleum Machinery Parts

Transport Package

Pallet

Trademark

Customization

Origin

China

HS Code

8431431000

Production Capacity

50000pieces/Year

Key features

High-Strength Material Construction: Made of cast steel to withstand high pressure, high temperature, and high-speed mud shocks.

Multi-Stage Sealing Design: Ensures connection safety, reliability, and prevents mud leakage or broken heads.

Lightweight and Easy Operation: Compact design allows for quick connection and disassembly, saving time and resources.

API and ISO Certified: Meets API 7-1 and ISO9001 standards for quality and safety.

Full Customization Available: Supports customization from samples, designs, and specific color requirements.

Versatile Application Types: Includes casing, tubing, union, and tee sub variants for different drilling needs.

Efficient Logistics Support: Long-term cooperation with shipping agencies ensures lowest shipping fees.

Fast Lead Time: Production completed within 15 workdays during both peak and off-peak seasons.

Company profile

Fast Delivery

DONGYING LIANHUI PETROLEUM TECHNOLOGY CO.,LTD

Shandong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 years CertifiedNearest Port: Qingdao portAverage Response Time: ≤7.07h CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

AddressNo. 38 Mengshan Road, Dongying District, Dongying, Shandong, China

Plant Area43 square meters

Number of Employees5

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsPetroleum machinery accessories

R&D Engineers1 people

Our Industry Experience & Global Business Record

Year of Establishment2018-06-22

Main MarketsEurope, Southeast Asia/ Mideast

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff3

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:How do you transport the goods?

We transport the goods by container. We possess long term cooperation with ship agency which can provide you lowest shipping fee. For samples we can send by express.

Q:Can you satisfy my special requirement?

Definitely! We have strong design capacity and R&D capacity!

Q:Which shipment terms can you accept?

EXW FOB CNF CIF DDU DDP

Q:What is the minimum order quantity?

The minimum order quantity is 1.

Q:What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payment.