| item | value |
| Shank Type | smooth |
| Head Style | cylindrical head |
| Place of Origin | China |
| Hebei | |
| Brand Name | Dewell |
| Model Number | Customized |
| Type | welding screw |
| Material | carbon Steel |
| Head Diameter | 6mm-22mm |
Definition and purpose of bolts
Studs are high-strength and rigid fasteners used in various steel structure projects for rigid combination connections between different connectors. It uses arc stud welding to fix the cylindrical head welding nail on the connecting piece, which enhances the structural stability and load-bearing capacity.
Specification of bolts
The specifications of bolts are usually nominal diameters of 10mm to 25mm, and the total length before welding is 40mm to 300mm. This specification of bolt is suitable for connection requirements in various steel structure engineering.
Chemical composition and mechanical properties of bolts
Studs are usually made of low-carbon alloy steel, with chemical compositions including carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), etc. In terms of mechanical properties, the tensile strength of the bolt should not be less than 400N/mm ², the yield point should not be less than 320N/mm ², and the elongation rate should not be less than 14%.
Size and surface requirements for bolts
The size of bolts has specific regulations, such as minimum length, maximum length, diameter, etc. In addition, the surface of the bolt should be free of rust, oxide scale, grease, burrs, etc. The rod should not have cracks that affect its use, and the depth of the head cracks should not exceed a certain value.
National standard for bolts
The national standard for bolts is issued by the General Administration of Quality Supervision, Inspection and Quarantine of China, with the specific standard being GB/T10433-2002. This standard is applicable to shear resistant components, embedded components, and anchoring components of various structures in civil and construction engineering, and ensures the quality and safety of bolts.
Stud is a type of fastener used for high-strength and rigid connections in steel structure engineering, mainly applied in various steel structure constructions, serving as a rigid combination connection. The specification of the bolt is usually a nominal diameter of 10-25mm and a total length of 40-300mm before welding. It is the abbreviation of cylindrical head welding nail for arc stud welding, which is firmly embedded in concrete through welding technology and tightly connected to steel structure, thereby improving the bonding strength between the two materials, enabling more effective load transmission between steel and concrete, and enhancing the bearing capacity of the entire structure. The application of bolts is widespread, especially in large-scale projects such as high-rise buildings, bridges, and industrial plants, and is a key factor in ensuring structural stability. In addition, bolts can also improve the shear resistance of structures, especially under horizontal forces (such as wind loads and seismic actions), by resisting relative slip caused by shear forces, ensuring that the structure can maintain integrity under horizontal forces, and enhancing the seismic and wind pressure resistance of the structure.
Casters, also known as universal wheels, have a structure that allows for 360 degree horizontal rotation under dynamic or static loads. This type of wheel is usually used in conjunction with fixed casters, which do not have a rotating structure and cannot rotate horizontally but can only rotate vertically. There are various materials for casters, including PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, etc. According to their load-bearing capacity, they can also be divided into micro casters, light casters, medium casters, heavy casters, and ultra heavy casters.
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Hex head bolt and nut Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Hex head bolt and nut Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
Butterfly buckles and double ring buckles (also known as butterfly buckles, connecting rings, or linking rings) are mainly used to connect the chains, rings, and hooks in chain rigging. The design of this connecting ring allows for the pivot connection of a rotating ring body at each end of a connecting ring body. Its characteristic is that the body is a hollow cylindrical body, and the two rotating ring bodies are formed by a protruding embedded part at one end of a linear rod, and the other end is bent into a ring and then wound around a straight section for positioning.
Double Fold Self Locking Washer Material: carbon steel, stainless steel, etc. Size: M5-M39, 1/4”-1-1/2”,etc. Standard: DIN25201,GB/T955 Finish: white zinc plated, yellow zinc plated, blue zinc plated, Hot-dip galvanized, black oxide, plain, etc.
A bracket is a widely used support structure in various occasions, with diverse designs and materials that can meet different usage needs. Hardware brackets are usually made of metal materials such as stainless steel, aluminum alloy, etc., which have good durability and load-bearing capacity, ensuring the stability and safety of the bracket.
Materials: Carbon steel, Stainless steel Size: Customized as per detailed sizes or drawings MOQ: 1,000pcs above, depends on products or dimensions Sample lead time: 3-7 working days mostly Massive lead time: 10-15 working days mostly Trade terms: EXW/FOB/CIF/CNF/FCA/DAP/DDP/DDU Package: PE bags + brown carton + pallets or customized as demands
Truss Head Self Drilling Screws Size:M4.2-M4.8 Length:12mm-50mm Material: carbon steel Finish: white zinc plated, blue zinc plated,etc.
Type:SCISSOR JACK,User Car Jack Place of Origin:Handan, China Material :Stainless steel,Carbon steel Usage Wide Usage Packaging and delivery Packaging Details caster wheels,all goods simple pack in the carton with poly bag or as customer’s request
Introduction: Automotive glass lifters are generally composed of the following parts: control mechanism (rocker arm or electric control system), transmission mechanism (gear, toothed plate or rack, gear flexible shaft meshing mechanism), glass lifting mechanism (lifting arm, motion bracket), glass support mechanism (glass bracket) and stop spring, balance spring. The basic working route of a glass lifter is the control mechanism → transmission mechanism → lifting mechanism → glass support mechanism. The balance spring is used to balance the gravity of the glass to reduce the operating force; The stop spring installed between the small gear and the support seat is used to hold the glass (stop) and ensure that it stays in the required position.
Finish BLACK OXIDE Measurement system Metric Application Heavy Industry, Mining, Water Treatment, Retail Industry, General Industry, Automotive Industry Place of Origin China Model Number 981 Standard DIN Material carbon steel, stainless steel Product name Round Nut Type lock nut Size M10-M100 Color Natural Colour Packing Cartons+plastic Bags MOQ 1000
Material 1.StainlessSteel:SS201,SS303,SS304,SS316,SS410,SS420 2.Steel:C45(K1045), C46(K1046),C20 3.Carbon Steel: 1010,1035,1045 4.Aluminum or Aluminum Alloy:Al6061,Al6063,Al7075,etc 5.Brass:H59,H62,Copper,Bronze Grade SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc. Finish Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc. Thread UNC,UNF,UEF,UN,UNS Standard ISO, DIN, ANSI, JIS, BS and Non-standard Sample Service Samples are all in free. Certificate ISO9001,CE, SGS, BV Advantage 1. Competitive price; 2. OEM service available Packing Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Lead Time 7-15 work days after order confirmed Application Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc. Notes Special specifications and marks can be made according to customers requirements;
Hexagonal Self-drilling screw Diameter: 4.8mm, 5.5mm,6.3mm(10#,12#,14#), etc. Length: 16-300mm Material: carbon steel, stainless steel, etc. Finish: white zinc plated, yellow zinc plated, blue zinc plated, etc.
Casters, also known as universal wheels, have a structure that allows for 360 degree horizontal rotation under dynamic or static loads. This type of wheel is usually used in conjunction with fixed casters, which do not have a rotating structure and cannot rotate horizontally but can only rotate vertically. There are various materials for casters, including PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, etc. According to their load-bearing capacity, they can also be divided into micro casters, light casters, medium casters, heavy casters, and ultra heavy casters.
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Hex head bolt and nut Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Hex head bolt and nut Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
Butterfly buckles and double ring buckles (also known as butterfly buckles, connecting rings, or linking rings) are mainly used to connect the chains, rings, and hooks in chain rigging. The design of this connecting ring allows for the pivot connection of a rotating ring body at each end of a connecting ring body. Its characteristic is that the body is a hollow cylindrical body, and the two rotating ring bodies are formed by a protruding embedded part at one end of a linear rod, and the other end is bent into a ring and then wound around a straight section for positioning.
Double Fold Self Locking Washer Material: carbon steel, stainless steel, etc. Size: M5-M39, 1/4”-1-1/2”,etc. Standard: DIN25201,GB/T955 Finish: white zinc plated, yellow zinc plated, blue zinc plated, Hot-dip galvanized, black oxide, plain, etc.
