Name: HRB355/HRB400/HRB500 Ribbed bar
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HRB355/HRB400/HRB500 Ribbed bar

Implementation standard: GB 1499.2-2007,Rebar is the common name of hot rolled ribbed steel bar. The grade of ordinary hot-rolled steel bar consists of HRB and the minimum yield point of the grade. H, R and B are the first letters of the words Hotrolled, Ribbed and Bars respectively.
Hot rolled ribbed steel bars are divided into two grades HRB335(old number 20MnSi), three grades HRB400(old number 20MnSiV, 20MnSiNb, 20Mnti) and four grades HRB500.

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Product parameters

The difference between HPB and HRB rebar:

1, the strength of the two steel bars is not the same, the strength of HPB will be higher, and belongs to the first grade steel, but HRB belongs to the second grade steel, so the strength will be lacking.

2, the two types of steel bars are not the same, HPB is a smooth steel bar, more suitable for use as a connection that can withstand power, and HRB is a ribbed steel bar, more suitable for use as a load-bearing member.

HPB(Hot Rolled Circular Steel Bar)

(HPB is the English abbreviation of Hot-rolled PlainSteel Bar), commonly known as wire rod, the diameter of 6-12 is the most common, including HPB235 and HPB300, nominal diameter of 6~22d/mm, 235 and 300 respectively refer to its corresponding yield strength.

Light round steel bar diameter 6.5 ~ 12 mm of steel bar, most rolled into rod; The diameter of 12 to 40 mm is generally 6 to 12 meters long straight strip. Grade I steel bar (Q235 steel bar) are rolled for smooth circular section, supply form is disk circle, diameter is not more than 12mm, length is 6m~12m.

In architecture, it is often used to make stirrups, board distribution bars, stirrups, wall reinforcement and so on.HRB(Hot Rolled ribbed Bar)

(Hot-rolled Ribbed -steelBar), the following number is the yield strength of the steel bar. For example, HRB500 refers to hot-rolled ribbed steel bars, the yield strength is 500MPa, and so on 335 is the yield strength of 335Mpa, 400 is 400MPa.

Secondary rebar (HRB335) is threaded rebar, diameter 12-25 is the most common. Tertiary rebar (HRB400 or more) is also threaded rebar, similar in diameter to secondary rebar, higher in strength, but the price is also high, and has been gradually promoted.

Used in beams, columns, shear walls, etc. No matter how large the diameter is, it is rarely used in civil construction, and is often used in mass concrete, such as hydraulic engineering.

Product information:

Product Name	Rebar
Material	HRB400,HRB400E,HRB500,HRB500E,ASTM A53 GrA,GrB;STKM11,ST37,ST52,16Mn
Size	6mm,8mm,10mm, 12mm, 13mm, 14mm, 16mm, 20mm, 22mm, 25mm, 30mm, 32mm, 40mm,50mm
Length	5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques
Standard	BS,GB,JIS, ASTM, AISI,etc.
Grade	Grade A, Grade B, Grade C
Section Shape	Spiral Shap,Herringbone Shap,Crescent Shap
Technique	Steel Rebar Iron Rod
Packing	Bundle, or with all kinds of colors PVC or as your requirements
Ends	Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
Surface Treatment	1. Galvanized2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement



Origin	Tianjin OF China
Certificates	API ISO9001-2008,SGS.BV
Delivery Time	Usually within 10 days after receipt of advance payment

HRB335 steel bar refers to two-stage hot-rolled ribbed steel bar with yield strength of 335MPa.

The commonly used diameter of HRB335 steel bars is 10,12,14,16,18,20,22,25,28,32 mm, etc.

The original strength grade of the steel bar is divided into one grade, two grade and three grade according to strength; After the new specification came out, it was changed to the current level, and now there are HPB225, HRB335, HRB400,RRB400 and so on. HRB335 is the original secondary steel.

HRB stands for Hot-rolled Ribbed steel Bar, the number after is the yield strength of the steel bar. Secondary steel (HRB335) is threaded steel, 12-25 diameter of the most common, used in beams, columns, shear walls and so on. No matter how large the diameter is, it is rarely used in civil construction, and is often used in mass concrete, such as hydraulic engineering.

HPB300 is Grade one steel. HPB is the abbreviation of Hot-rolled Plain Steel Bar. These include HPB235 and HPB300, with nominal diametries of 6 to 12mm/d. 235 and 300 refer to the corresponding yield strength.

The standard yield strength of the steel bar HRB400 is 400MPa, and the design value is 360MPa.

1, HRB is the hardness value, meaning Hot-rolled Ribbed steel Bar, refers to the Rockwell hardness measurement method (HR) B scale, indicating that the hardness of the measured steel is how many HRB, the following number is the steel yield strength.

2, three levels of steel (HRB400 or more) is also threaded steel, similar in diameter to secondary steel, higher strength, but the price is also high, has been gradually promoted.

Method of weighing	Weighing/counting
Material packaging	Suitable for export sea packaging or packaging according to customer requirements
Minimum quantification	The MOQ for a single size is 200 tons, and the delivery time is 15-30 days
Minimum quantification	The MOQ of single size is 5 tons, and the delivery time is 3-15 days
Processing service	Can provide customers with disk screw straightening/steel bar cutting/export packaging
FOB	The transaction price shall be the delivery price according to the contract price
Seller's obligations	1. Be responsible for delivering the goods conforming to the Contract to the vessel designated by the Buyer at the named port of loading within the date or period specified in the Contract, in accordance with the usual port methods, and give the Buyer adequate notice. 2. Handle the export procedures of goods and obtain export licenses or other approval documents. 3. Bear all affairs until the goods cross the ship's rail at the port of loading. 4. Responsible for providing commercial invoices and usual documents proving delivery of the goods to the ship.
Buyer's obligation	1. Responsible for payment of accounts as stipulated in the contract. 2. Responsible for chartering or booking the vessel, paying the freight and giving the Seller adequate notice of the name of the vessel, the place of shipment and the required time of delivery. 3.Obtain, at your own risk and expense, import licences or other authorizations and complete all customs formalities for the importation of goods and, if necessary, for their transit through another State. 4. Bear all costs and risks after the goods have crossed the ship's rail at the port of loading. 5. Receive the goods delivered by the seller in accordance with the contract and accept documents in accordance with the contract.

Theoretical weight

Diameter according to the British standard (ASTM A706 standard) production

Reinforcement marking	Production diameterInch [mm]	Theoretical weightPounds per foot [kg/meter]
3 "[10]	0.375 [9.5]	0.376 [0.560]
4 "[13]	0.500 [12.7]	[0.994]
5 "[16]	0.625 [15.9]	1.043 [1.552]
6 "[19]	0.750 [19.1]	1.502 [2.235]
7 "[22]	0.875 [22.2]	2.044 [3.042]
8 "[25]	1.000 [25.4]	2.670 [3.973]
9 "[29]	1.128 [28.7]	3.400 [5.060]
10 "[32]	1.270 [32.3]	4.303 [6.404]
11 "[36]	1.410 [35.8]	5.313 [7.907]
14 "[43]	1.693 [43.0]	7.650 [11.38]
18 "[57]	2.257 [57.3]	13.60 [20.24]

Hot rolled, cold rolled, cold drawn steel bars, as well as Ⅳ grade steel by heat treatment of heat treatment of steel bars, the strength is higher than the former.

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