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  • Drill Collar (1).jpg
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Drill Collar

Product: Drill Collar Standard:API SPEC 7-1 Steel grade:AISI 4145H Sizes:3 1/8" -- 11" Connected Type:NC, IF, REG

PRODUCT DETAILS


Keyword: Steel Plate

API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.

Specification

Standard

Number

OD
(in.)

ID
(in.)

Length
(ft)

Weight
(lb/ft)

Typical Bending
Strength Ratio

SY5144-2007/API7-1

NC 23-31

3-1/8

1-1/4

30

22

2.57:1

NC 26-35 (2-3/8 IF)

3-1/2

1-1/2

30

27

2.42:1

NC 31-41 (2-7/8 IF)

4-1/8

2

30 or 31

34

2.43:1

NC 35-47

4-3 /4

2

30 or 31

47

2.58:1

NC 38-50 (3-1/2 IF)

5

2-1/4

30 or 31

54

2.38:1

NC 44-60

6

2-1/4

30 or 31

83

 

 

Company description

Luchi Steel Pipe Manufacturing Co., Limited is located in Liaocheng Development Zone Huitong Logistics Park. Since its establishment, our company has been adhering to the purpose of "quality and progress, honesty and trust", relying on increasingly sophisticated technology and strong production capacity, has developed into a modern steel plate manufacturing and production enterprises. The company has passed ISO9001 quality management system certification and CE certification. Our products include steel plate (stainless steel plate, galvanized plate, carbon plate, etc.), steel strip (stainless steel strip, galvanized steel strip, etc.), steel coil (stainless steel coil, galvanized steel coil, etc.), steel pipe (stainless steel pipe, seamless pipe, oil casing, etc.), color coated coil, corrugated plate and various pipe fittings and profiles. All products are manufactured according to ASTM standard, JIS standard, DIN standard, BS standard and other standards. Applicable to automobile manufacturing, aerospace, chemical energy, construction, electric power and other fields. Over the years, the company spirit of 'quality societe Generale, keep the promise of reputation' business philosophy and service purpose for our customers to provide better products and services, has been the new and old users from all walks of life support and praise. The same product than quality, the same quality than price, the same price than service, the same service than reputation. My company solemnly promise, under the same quality, to ensure a reasonable price, perfect service, lofty reputation to thank friends from all walks of life support and love.

 

 

Factory description

Luchi Steel Pipe Manufacturing Co., Limited is a professional steel pipe production enterprises, our factory has pipeline processing, cold forming, hot extrusion and other production lines. Such as heat treatment chemical analysis, metal halide detection, physical detection, nondestructive testing and other testing equipment and testing technology, imported foreign physical and chemical testing equipment full spectrum direct reading spectrometer, can quickly and accurately carry out chemical analysis of various metal materials. Our production capacity exceeds 30,000 tons of tubing. In addition to independent production, the company has also signed annual sales contracts with major steel mills.
The factory has sufficient inventory and complete varieties and specifications. In line with the sales principle of low price management, let customers buy rest assured, with rest assured! Customer's advice is the driving force of our development, customer satisfaction is the pursuit of our service, integrity and efficiency is our service tenet, we wholeheartedly for new and old customers to provide excellent products and better service, but also sincerely welcome new and old customers to call, letter, visit, negotiate business, guide work!

 

 

Packing and shipping

Products are widely used in precision instruments, aviation, ships, automobiles, household appliances, construction, Bridges, boilers, highway guardrail and other industries. Annual sales of more than 5 million tons. Products are exported to more than 70 countries and regions. We have won the recognition of customers with good reputation and good service.

 

 

Application field

Products are widely used in precision instruments, aviation, ships, automobiles, medical, construction, Bridges, boilers, parts processing and other industries.

 

 

The services provided by the company

Rich product specifications, according to customer requirements to provide processing customized products.

Strict quality inspection, to provide high quality products, satisfactory service.

Provide the most cost-effective product quotation scheme.

Have advanced production equipment, pay attention to the details of the production process, can provide sample service.

Strictly check the source of raw materials and provide a perfect material supply chain.

Provide export standard packaging or packaging according to customer requirements.

 

Company Advantage - Why choose us

PRODUCTS RICH
Product specifications complete material, support personalized customization, export can be customized, special projects can be customized.
HIGH QUALITY
Adopt professional process production process, fully guarantee product quality, strict quality inspection.
SELF-PRODUCED
The product is produced by our own factory, factory directly sold, reducing the links of intermediate trading companies.
PERFECT SERVICE
Perfect pre-sale consultation, after-sales return visit service, tracking after-sales service, let you worry about after-sales.
FAST DELIVERY
Product delivery speed, standard export packaging, 3-15 delivery time.
STRONG COMPANY
Has a number of production bases, annual output of more than 300,000 tons, stock is sufficient.
COST PERFORMANCE
The most cost effective quotation plan, save customer expenses.
We will follow the principle of "quality first, customer first, compliance, innovation". Strive to develop new products, the pursuit of first-class technology. For the majority of users to provide high quality products, satisfactory service. And welcome friends from all walks of life to work with us to create brilliant.

 

COOPERATIVE PARTNER

shrn steel
shiheng speclal steel
ansteel
ansteel
Hangzhou Iron and Steel
Benxi Steel
Tianjin Iron and Steel
Wuhan Iron and Steel
Shagang Group
Panzhihua Steel
Tangshan Iron and Steel
Baotou Steel
Maanshan Iron and Steel Group
Guangzhou Iron and Steel

CERTIFICATE OF HONOR

OUR ADVANTAGES

Quality Assurance:

To provide quality products at the same time to improve after-sales service
One-stop Service:

We have a compatible and experienced R&D team.
Independent factor:

We have our own factory and give the best price.
Professional Team:

Professional team to provide you with efficient service.

FAQ

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