Chain Iran

Steel Chain

Import, production and distribution of all kinds of steel chains in Kariz industrial equipment.

Sale of steel chains
Sale of galvanized steel chain
Sale of stainless steel chain
Sale of G80 grade steel chains
Selling American chains
Sale of grade 30 galvanized chains
Sale of bag chains
Selling iron chains
TYPES OF CHAIN GRADES
Industrial chains consist of linked segments of durable metal, such as stainless steel, galvanized steel, and brass. They are available in a wide range of sizes and strengths to lift and transport materials across a diverse set of applications.

The tensile strength of the base material—i.e., the ultimate breaking strength—determines the rating and grade given to the particular chain. The greater the breaking strength, the higher the grade, and vice versa. The grade indicated for a chain helps industry professionals identify the types of applications for which it is appropriate. For example, the strength of galvanized chains relies on the amount of carbon present in the metal as grade 30 chain has less carbon, it is weaker than grade 40 chain and suitable for service duty applications rather than heavy-duty applications.

At Armstrong / Alar Chain Corporation, we pride ourselves on our extensive knowledge and experience with metal chains

chain blak

جرثقیل دستی یا جرثقیل زنجیری
جرثقیل دستی یکی از پرکاربردی ترین و حرفه ای ترین ابزار در امر جابجایی اجسام و اشیا مختلف در محیط های کارگاهی ، صنعتی ،و... از جرثقیل دستی استفاده میشود
این نوع جرثقیل جهت حمل و نقل کالا لوازم سنگین در سایزها و نمازهای مختلف تولید شده است و دارای زنجیری به طول شش متر ارتفاع کاربرد دارد. یکی از معرف ترین برندهای تولید جرثقیل دستی در دنیا برند ژاپنی ویتال میباشد که اغلبه جرثقیل های دستی در کارگاه های صنعتی و تولیدی کشور برند ویتال هستند.
جرثقیل های زنجیری دستی کارایی بسیار بالا و در این حال کاربردی بسیار ساده در اختیار شما قرار میدهد
به این صورت که شما به عنوان کاربر این دستگاه پس از نصب تنها بایک زنحیر سرکار دارید. باکشیدن این زنجیر به طرفین به صورت عمودی با صرف انرژی ناچیز اما تعداد دو

Manual Chain Hoist

Import and distribution of German, Japanese, Korean, and Chinese hand weights in Kariz industrial equipment.
Sale of cranes
Hand crane sale
Hand chain crane for sale
Sale of Vital Weapon hand crane

Manual cranes are very efficient tools in the lifting industry that play an important role in providing lifting power. In manual cranes, the lifting force is obtained by the movement of a chain around the pulley, which is also provided by the chain on the operators hand. In this type of crane, chain beads, which must have a suitable grade of steel, are used to lift the load, and the length of these chains is determined as 3 meters and 6 meters by default in the factory, which can be replaced later.
Manual cranes are used in tonnages of 0.5 ton - 1 ton - 1.5 ton - 2 ton - 3 ton - 5 ton and above.

Hand chain crane 0.5 ton 3 meter chain
Hand chain crane, 1 ton, 3 meter chain
Hand chain crane, 1.5 tons, 3 meters chain
Hand chain crane, 2 tons, 3 meters chain
Hand chain crane, 3 tons, 3 meters chain
Hand chain crane, 5 tons, 3 meters chain
Hand chain crane 0.5 ton 6 meter chain
Hand chain crane, 1 ton, 6 meter chain
1.5 ton chain hand crane, 6 meter chain
Hand chain crane, 2 tons, 6 meters chain
Hand chain crane, 3 tons, 6 meters chain
Hand chain crane, 5 tons, 6 met

G80 steel Chain

Import and distribution of G80 grade steel chains in Kariz industrial equipment.

Sale of steel chains
G80 chains for sale
Sale of loading chains
Sale of crane chains
Selling American chains
Sale of nail chains


Dry G80 chain, which has a high percentage of 97% iron in its alloy composition, is one of the most widely used grades of steel chain. This grade is produced from steel chain with medium carbon percentage, but its mechanical characteristics have been improved by performing a precise heat treatment. This heat hardening process causes higher continuity and, as a result, higher abrasion and tensile resistance in the chain steel crystals. The most commonly used size of this grade of chains is 6 mm to 24 mm, which is used in the manufacture of chain slings and also lifting connections. G80 grade chain must be produced and manufactured according to DIN 818 standard. G80 grade chain is available in polished type, black steel color, hot galvanized, cold galvanized, PVC coated, or plastic, etc. The lowest safety factor f:s of G80 chain should be 4 times its SWL and its Proof Test is 2.5 times SWL.
G80 grade chains are produced through forging operations and are made by cutting steel wires and then welding the points of connection of the grains of this chain. The contro

Anchor Chain

Import and distribution of all kinds of anchor chains in Kariz industrial equipment.

Steel anchor chain
Ships anchor chain
Ship winch anchor chain
Galvanized anchor chain

Anchor chain is a type of steel chain that has its own characteristics and is different from the size of chains and is produced with special standards for connecting ship anchors. The anchor chains are connected to the ships anchor on one side and to the winches on the other side. These chains are left in the water in order to prevent the movement of the ship, in order to keep it stable in a certain jagged position, which prevent the movement of the ship by hooking on the bottom of the sea and the ocean. The anchor chain in high-tonnage cargo ships has a rod in the middle of the chain beads, which both prevents the change of the length of the chain during contraction and reduces the possibility of foreign objects being placed on the anchor chain. . Strong steel alloys with high tensile strength are used in the production of anchor chains.


The anchor chain is an essential component of a ships anchoring system, providing stability and security in various maritime operations. This essay aims to delve into the different aspects of a ships anchor chain, including its construction, materials used, mainte

china vital 1 ton chain block

The 1-ton manual chain hoist, VITAL design, is a reliable mechanical lifting device for handling loads in industrial, workshop, and construction environments, operating with a simple mechanism without the need for electricity or hydraulics. This hoist features a durable steel body with anti-rust and wear-resistant coating, ensuring consistent performance against impact and harsh weather conditions. Its internal system consists of heat-treated steel gears with high surface hardness typically in the 50–60 HRC range and a safety factor of 4:1, allowing it to safely handle a rated load of 1000 kg. The automatic brake mechanism, equipped with wear-resistant friction plates, ensures secure load holding at any height and prevents sudden load release. Due to its compact design and lighter weight compared to similar models, this hoist is easy to transport and install in various worksite locations.

The load chain of the 1-ton manual chain hoist, VITAL design, is typically made from alloy manganese steel with a **G80** grade, compliant with **EN 818-7** standards for lifting applications. The chain size is generally **6 mm**, with a nominal tensile strength of approximately **800 MPa**, capable of withstanding both shock loads and long-term use. The chain surface is protected with a bl

2 ton chain electric hoist with trolley

The 2-ton electric chain hoist with motorized trolley, 4-function type lifting up, lowering down, forward travel, and backward travel is manufactured in China and designed for medium-duty industrial applications. The unit is equipped with a high-efficiency three-phase induction motor, typically operating at 380V/50Hz, with a thermal protection system to prevent overheating. Its lifting speed is generally in the range of 6–8 m/min, while the traveling trolley moves horizontally at approximately 10–20 m/min, depending on the model. The gearbox is constructed with hardened alloy steel gears for improved durability, and the load chain is made of Grade 80 alloy steel to ensure maximum tensile strength. Safety features include an electromagnetic brake, upper and lower limit switches, and overload protection for reliable operation.

This type of hoist is widely used in factories, assembly lines, metal workshops, construction warehouses, and maintenance facilities where safe and efficient material handling is required. Its 4-function capability allows both vertical and horizontal load movement, making it ideal for overhead beam systems and production halls with limited space. The motorized trolley enables precise positioning of heavy components up to 2,000 kg, reducing manual handl

chinese 5 ton chain block

**Paragraph 1 Technical Specifications of 5-ton Vital Chain Hoist – Chinese Model:**
The 5-ton Vital VITAL manual chain hoist from China is designed for heavy-duty industrial applications with a precise load capacity of 5,000 kg. It features a high-carbon steel chain with 800 MPa tensile strength and hardened-tooth gear mechanisms. The standard chain length is 3 meters, extendable up to 6 meters. The body is constructed from impact-resistant steel with an anti-corrosion epoxy coating. A dual-action centrifugal brake system ensures operational safety. The unit weighs 28 kg and operates within a temperature range of -25°C to +60°C. This model complies with ISO 9001, CE, and GS standards.

**Paragraph 2 Comparison with Japanese Original Product:**
Japanese hoists like KITO’s 5-ton models use alloy steel with 1,000 MPa strength and chrome-molybdenum chains for enhanced durability. Manufacturing precision in Japanese units reaches ±1%, compared to ±2% in the Chinese Vital model. The braking system in Japanese hoists carries TUV certification, while the Chinese version meets only CE standards. Japanese hoists weigh around 25 kg and operate from -30°C to +70°C. Pricing for Japanese hoists is 40% higher than the Chinese Vital model, but they come with a 5-year warrant

binder chain

The chain with hook is a critical tool in transportation and material handling industries, designed for lifting heavy loads and connecting objects via hooks attached to the chain. These chains are typically made from alloy steel with high resistance, specifically designed to withstand heavy loads and extreme pressures in industrial and construction environments. The links of chain with hook are made from steel and come in various diameters, typically ranging from 4 mm to 32 mm. The chain length can generally be ordered from 2 meters to 30 meters or more, depending on the requirements. The hooks attached to these chains are generally made from alloy steel, offering high resistance to tension and corrosion.

Chains with hooks are primarily used in lifting systems such as cranes, hoists, and transport equipment for handling heavy or unconventional loads. The hooks are designed to withstand high pressure and can easily connect to various objects such as pipes, heavy machinery, and metal structures. These chains with hooks, due to their robust design and safe operation in different conditions, are widely used in construction, mining, transportation, and manufacturing industries. Additionally, they are often coated with anti-corrosion layers like galvanization or epoxy paints to prot

anchor chain

Anchor chains are manufactured from marine-grade alloy steel grades U2, U3, and R3 490–770 N/mm² tensile strength. Standard bar diameters range from 12 to 150 mm with a pitch length of 6 times the bar diameter. Minimum breaking force varies from 350 to 12,500 kN depending on grade and diameter. Proof test force is applied at 70% of the minimum breaking force per ISO 1704 standards. These chains undergo normalization and tempering processes to reduce residual stresses and enhance toughness. Each chain link is subjected to magnetic particle inspection MPI before assembly.

The chain structure features resistance welded links with full circumferential flash butt welding. Links are of the marine elongated oval stud link type, with a central stud to prevent deformation under tension. All surfaces are coated with hot-dip galvanizing 85–120 microns or marine-grade epoxy coating. Special fittings include end links, joining links, and swivels, forged from steel with strength matching the chain. These chains are designed for operating temperatures from –20°C to +40°C in saltwater and corrosive marine environments. Production complies with international standards ISO 1704, DIN 8117, and classifications from maritime institutions such as Lloyd’s, DNV, and ABS.

chinese 3 ton chain block

The 3-ton manual chain hoist, Chinese VITAL design, is engineered for the safe handling of heavy loads in industrial sites, workshops, and construction projects. The unit features an alloy steel body with an anti-rust and wear-resistant coating, ensuring long service life. Its power transmission system includes heat-treated steel gears with a surface hardness of approximately 55–60 HRC and lubricated bearings to reduce friction. The hoist has a rated capacity of 3000 kg and a standard lifting height of 3 meters, making it suitable for various applications. The net weight is approximately 28–32 kg, which, despite the high capacity, allows for relatively easy transport and installation.

The load chain of this hoist is made from manganese alloy steel, grade G80, and meets EN 818-7 standards for heavy lifting applications. The chain size is typically 10 mm, with a tensile strength of around 800 MPa, capable of handling both dynamic and static loads. The chain surface is treated with black phosphate or galvanized coating for enhanced corrosion resistance. The hoist usually has a safety factor of 4:1, which in static tests means withstanding at least 12,000 kg before failure. These features make this model a reliable choice for industrial and heavy-duty operations.

Galvanized high carbon chain

Galvanized steel chains are manufactured from carbon steel grade C50 or A8 with a tensile strength of 800–900 N/mm². Wire diameters range from 6 to 30 mm with a pitch length approximately 3.2 to 3.6 times the wire diameter. Minimum breaking force varies from 25 to 550 kN depending on chain size. Working Load Limit is calculated with a 4:1 safety factor for general use and 5:1 for critical operations. The galvanizing process uses hot-dip or electro-galvanizing methods with a coating thickness of 20 to 100 microns. The galvanized coating is certified per ISO 1461 for resistance to atmospheric corrosion and moisture.

The chain structure features resistance welded links with full circumferential flash butt welding. Links are designed in a standard oval shape with a 60-degree internal attachment angle for even load distribution. Post-heat treatment surface hardness is maintained between 30 to 35 HRC Rockwell C. The galvanized coating provides uniform coverage with high adhesion Grade 1 and wear resistance. These chains are suitable for operating temperatures from –40°C to 200°C in humid, marine, and mild chemical environments. Production complies with ISO 1834 Grade 8 and DIN 766 standards for industrial, agricultural, marine, and safety applications.

Industrial Stainless Steel Chain

The industrial stainless steel chain is a corrosion resistant chain designed for continuous industrial use and humid environments. It is typically manufactured from stainless steel grades 304, 316, or 316L. The nominal link diameter ranges from 4 to 40 millimeters depending on application. Minimum tensile strength generally falls between 520 and 750 megapascals. The chain is designed according to ISO 1704 and ASTM A580 standards. The working load limit is defined by diameter, alloy grade, and link type. A minimum design safety factor of 3 to 1 is commonly applied. Polished surfaces reduce contamination and stress concentration.

Structurally, industrial stainless steel chains are made from forged links welded using precise TIG or laser welding. Austenitic or duplex structures provide excellent resistance to corrosion and chemicals. The chain is suitable for moderate static and dynamic loading. The typical operating temperature range is minus 40 to plus 300 degrees Celsius. Tight dimensional tolerances ensure uniform stress distribution. Adequate resistance to mechanical fatigue extends service life. Common applications include food, pharmaceutical, and marine industries. Each chain undergoes visual inspection and mechanical testing.

Galvanized Low carbon chain

Galvanized iron chains are made from low-carbon iron with a tensile strength of 400–500 N/mm². Wire diameters range from 4 to 20 mm with a pitch length approximately 3.5 to 4 times the wire diameter. Minimum breaking force varies from 10 to 200 kN depending on chain size. Working Load Limit is calculated with a 3:1 to 4:1 safety factor for light to medium-duty applications. The galvanizing process uses the hot-dip method with a coating thickness of 50 to 80 microns. The galvanized coating is certified per ISO 1461 for corrosion and rust resistance.

The chain structure features resistance welded links with continuous circumferential welding. Links are primarily oval or twist-link shaped with an internal attachment angle of 60 to 70 degrees. Surface hardness after galvanizing is maintained between 20 to 25 HRB Rockwell B. The galvanized coating provides uniform coverage with good adhesion Grade 2 and scratch resistance. These chains are suitable for operating temperatures from –30°C to 150°C in humid and non-aggressive corrosive environments. Production follows general ISO 9001 standards and internal technical specifications for decorative, light agricultural, animal fencing, and security applications.

chain sling 2 leg

The 2-legged chain sling is a lifting device used for handling heavy loads with two strands of steel chain. These slings are typically made from galvanized or stainless steel chains, offering high resistance to corrosion, wear, and pressure. 2-legged chain slings are available in various load capacities, ranging from 1 ton to 50 tons or more. The design ensures that the load is evenly distributed between the two legs, which enhances safety during lifting operations. Each chain leg is connected to an attachment point, ensuring that the pressure on the load is evenly split, making it a safer option for handling heavy items.

2-legged chain slings are primarily used in industrial, construction, transportation, and heavy equipment installation projects. Due to their high strength and resistance to various environmental conditions, these slings are ideal for handling loads that require safety and precision. They are commonly used in large-scale projects such as machine installations, heavy component lifting, and loading/unloading materials in harsh environments. These slings are often equipped with safety hooks and corrosion-resistant coatings such as PVC or galvanization to ensure optimal performance in challenging conditions.