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Specifications:
Head: truss/csk/pan/framing/hex head
Meterial: c1022a carbon steel
Sizes: all sizes
Moq: 3 tons
Point: drilling point
Thread: twin/single thread
Drive: philips drive
Treatment: hot treatment
Finished: zinc plated/ phosphated
Usage:
Used to fasten sheet metal composite materials, construction industry woods and plastics, metal with pre drill holes


Packing:
Small color box or bulk, with or without wood plate, depend on variety and specifications or as per buyer's required (1000pcs or 500 pcs per box, 16 or 20 boxes per carton, loose packing 20 or 25 in bulk)

Specifications

Self tapping screw
C1022a fine thread
Bright neat body without burr
Galvanized , tianjin factory

Premium quality hex head self tapping screw
Product feature
Material : c1022a , carbon steel 22a
Drive : phillips drive , #2 phillips , without
Head :hex head , hex flange head ,
Washer : steel with rubber washer , epdm washer , pvc washer
Head diameter : 14mm , 12mm
Thread : coarse thread , fine thread , full thread , half thread
Point : sharp tip , needle point
Finish : galvanized : white , bule-white , gold
Phosphate : black and gray
Nickel plating
Surface treatment : bright neat body without burr .
Packing : box packing : 1000pcs per color box , 20 boxes per carton , different sizes different quantity in per box
Loose packing : 25kg 50kg per carton or per bag
Hot selling in market : 5.5x25 mm, 4.8x25 mm , 6.3x25mm
Size : 4.8x19, 4.8x25 , 4.8x32, 4.8x38, 4.8x50mm
5.5x19 , 5.5x25 , 5.5x35, 5.5x45, 5.5x55 , 5.5x68, 5.5x75mm
6.3x20 , 6.3x25 , 6.3x35 , 6.3x45, 6.5x50 , 6.3x75mm ....

Standard exported packing 1000pcs/box , 20boxes/carton , with or without wood pallet in bulk packing , 25kg or 50kg per carton or per bag

Overview:
Rotary Drilling Rig is a self-running ground drilling equipment, including drilling rig and crawler car, which completes the drilling through the rotation, excavation, lifting, soil unloading of drill. It plays a vital role in varied foundation works of industrial infrastructure, such as concrete pouring pile, continuous wall.
Application:
Widely used for drilling and grouting in urban high-rise buildings, railways, highways, bridges, tunnels, airports, ports and other pile foundation engineering.
Features:
Diesel powered with higher work efficiency;
Highly integrated body without installation;
Can freely rotate to 360and move easily;
No dust and mud pollution while high-speed drilling.

41/2â?? LTC Coupling Oil Casing
Oil casing is primarily used for drilling oil and gas wells and the transportation of oil and gas. It includes oil drill pipes, oil casings, and sucker rods.

Introduction to Oil Casing Coupling Types:
1. LTC (Long Thread Connector): Long round coupling. The long thread connection LTC has the same thread shape as STC and can be connected; however, such connections are generally not permitted because they can withstand different torque values.

2. STC (Stub (Short) Thread Connector): Short round coupling. Both STC and LTC threads belong to the API standard threads. The only difference is the length of the threads; LTC is longer, while STC is shorter. For a 41/2â?? outer diameter pipe, if the actual measured thread length exceeds 3 inches, it is generally considered LTC; if it is less than 3 inches, it is considered STC.

3. BTC (Buttress Thread Coupling): Buttress thread coupling.

Processable Casing Specifications:
41/2'', 5'', 51/2'', 65/8'', 7'', 75/8'', 85/8'', 95/8'', 103/4'', 113/4'', 133/8'', 16'', 185/8'', 20''.

Steel Grades:
J55, K55, N801, N80Q, L801, P110, L803CR, 9CR, 13CR, P11013CR (Super 13CR), 28CR, etc.

Coupling Types:
Short round coupling (STC), long round coupling (LTC), buttress coupling (BTC), and various high gastightness special couplings.

Production Process:
Hot rolling.

Product Use:
Used for drilling oil wells.

Packaging Method:
Steel straps/steel frames, or according to customer requirements.

Annual Supply Volume:
300,000 tons.

Our company strictly adheres to API Spec 5CT standards and the ISO 9001 international quality management system. We have manufacturing equipment, including CNC lathes, CNC coupling machines, automatic flaw detectors, CNC hydrostatic pressure testing machines, automatic marking machines, automatic painting and labeling machines, 16ton cranes, ultrasonic thickness gauges, and automatic feeding systems for production and testing.

While meeting domestic market needs, we provide highquality products and services to numerous enterprises and have established longterm supplier relationships with countries and regions such as Saudi Arabia, the United Arab Emirates, Sudan, Kuwait, and Turkey.

Corporate Purpose:
Integrity, Pragmatism, Mutual Benefit, WinWin.

Management Philosophy:
Based on humane management, we implement modern management throughout all departments and processes of the enterprise; marketoriented, adhering to integrity and legality, and achieving winwin situations with customers.

We always follow the principle of prioritizing people before tasks, insisting on equipment and scientific management as the foundation, and providing customers with highquality products. With a complete marketing network and service system, we ensure satisfactory service for our customers. We look forward to working together to create brilliance!