Introduction to Epoxy Coated Rebar
Product Specifications
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Introduction to Epoxy Coated Rebar

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Epoxy coated rebar, also known as green rebar, is an epoxy resin protective coating prepared on the surface of ordinary rebar by electrostatic spraying powder and high temperature sintering process. The coating has excellent chemical corrosion resistance and does not react with acids and alkalis. The coating is also impermeable and can delay the contact of corrosive media (such as water, oxygen, chloride ions, etc.) with steel, thereby greatly extending its corrosion resistance life. It can replace traditional rebar to reinforce concrete and prevent corrosion. Epoxy coated rebar is used for concrete subject to corrosive conditions, including exposure to deicing salt or marine environment.
1.Epoxy coated steel bars have the following characteristics and advantages
Anti-corrosion propertiesEpoxy coating can effectively isolate corrosive media such as water and oxygen, improve the ability of the structure to resist external corrosion, and extend its service life.
Chemical stabilityEpoxy coating has good chemical stability, does not react with acids and alkalis, and can withstand the high alkaline environment of concrete for a long time without being damaged.
Permeation resistanceThe coating is impermeable and can prevent corrosive media (such as water, oxygen, chlorides, etc.) from contacting the steel bars, thereby effectively protecting the steel bars and greatly extending their anti-corrosion life.
ConstructionThe manufacturing process of epoxy coated steel bars is relatively simple, with good construction performance, and is suitable for reinforced concrete structures in various harsh environments.
2.Manufacturing Process
Surface treatmentThe rebar is sent to a sandblasting unit to remove all surface contaminants, mill scale and oxide layer. It also roughens the surface to give it a textured anchoring profile (microscopic peaks and small indentations on the surface).
CoatingAfter being blasted and preheated, the rebar passes through a powder spray booth where dry epoxy powder is sprayed from multiple nozzles. As the powder leaves the spray gun, the particles acquire an electrical charge. These charged particles are attracted to the grounded rebar. When the dry powder hits the hot rebar, it melts and flows into the anchoring profile, covering essentially the entire surface area of the rebar. The heat also triggers a chemical reaction that causes the powder molecules to form complex cross-linked polymers.
CuringAfter the powder is sprayed, the coating needs to be cured for a short time, about 30 seconds, during which time the coating hardens into a solid. After the curing period, water quenching is performed to quickly reduce the temperature of the steel bar for easy unloading.
3.Application Areas
Bridges, railways, seaports and terminalsIn these environments, steel bars are easily affected by corrosive media such as seawater and salt spray. Epoxy-coated steel bars can effectively extend the service life of the structure.
Nuclear power, sewage pool, petrochemical industryThese projects have higher requirements on the corrosion resistance of steel bars, and epoxy coated steel bars can meet their special needs.
Anti-floating anchorIn projects that need to resist the buoyancy of groundwater, epoxy-coated steel bars can provide better durability.
Precautions for use
Bond StrengthThe bond strength between epoxy coated steel bars and concrete is approximately 80% of that of uncoated steel bars, so appropriate anchorage length and tying method must be considered during design.
Processing and installationDuring processing and installation, damage to the coating should be avoided, such as using buffer materials for cutting and twisting, using rubber-coated lead wire for binding, etc.

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1.Product Parameters
Grade of Base Material ReinforcementHRB400, HRB400E, HRB500 HPB300 (Hot Rolled Round Steel Bar)
Coating TechnologyEN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
Coating StandardGB/T 25826-2010, JG/T502-2016
Conventional Diameter10／12／14／16／18／20／22／25／28／30／32／36／38／40／50mm
Custom Diameter6mm-50mm
Standard Length6m/9m/12m (Length can be customized)
UseAnti-floating anchors, bridges, railways, seaports, nuclear power, sewage tanks, petrochemical and chemical projects with corrosion resistance requirements
2.Chemical Composition of Base Metal
CarbonSiliconManganeseSulphurPhosphorus
0.25%0.80%1.6%0.045%0.045%
3.Mechanical Properties of Base Metal
Chinese Rebar CodeYield Strength (Mpa）Tensile Strength (Mpa）Carbon Content
HRB400, HRBF400, HRB400E, HRBF400E400540≤ 0.25
HRB500, HRBF500, HRB500E, HRBF500E500630≤ 0.25
HRB600600730≤ 0.28
4.Brand standards in different countries
USAJapanGermanyU.K.FranceItalySpainSwitzerlandChina
AISI/SAEJISW‐nr.DINBSENAFNORUNIUNESSGB
A570.36STKM 12A1.0038RSt.37‐24360‐E 24‐2‐‐131115
-STKM 12C--40 C-Ne----
1015‐1.0401C15080M15‐CC12C15, C16F.111135015
1020‐1.0402C22050A202CCC20C20, C21F.112145020
1213SUM221.07159SMn28230M071AS250CF9SMn28F.21111912Y15








11SMn28

12L13SUM22L1.07189SMnPb28‐‐S250PbCF9SMnPb2811SMnPb281914‐
‐‐1.072210SPb20‐‐10PbF2CF10Pb2010SPb20‐‐
1215‐1.07369SMn36240M071BS300CF9SMn3612SMn35‐Y13
12L14‐1.07379SMnPb36‐‐S300PBCF9SMnPb3612SMnP351926‐
1015S15C1.1141Ck15080M1532CXC12C16C15K137015
1025S25C1.1158Ck25‐‐‐‐‐‐25
A572-60‐1.89StE3804360 55‐‐FeE390KG‐2145‐
1035‐1.0501C35060A35‐CC35C35F.113155035
1045‐1.0503C45080M46‐CC45C45F.114165045
1140‐1.072635S20212M368M35MF4‐F210G1957‐
1039‐1.115740Mn4150M361535M5‐‐‐40Mn
1335SMn438(H)1.116736Mn5‐‐40M5‐36Mn5212035Mn2
1330SCMn11.11728Mn6150M2814A20M5C28Mn‐‐30Mn
1035S35C1.1183Cf35060A35‐XC38TSC36‐157235Mn
1045S45C1.1191Ck45080M46‐XC42C45C45K1672Ck45
1050S50C1.1213Cf53060A52‐XC48TSC53‐167450
1055‐1.0535C55070M559‐C55‐165555
1060‐1.0601C60080A6243DCC55C60‐‐60
1055S55C1.1203Ck55070M55‐XC55C50C55K‐55
1060S58C1.1221Ck60080A6243DXC60C60‐167860Mn
1095‐1.1274Ck101060A96‐XC100‐F.51171870‐
W1SK31.1545C105W1BW1A‐Y105C36KUF.51181880‐
W210SUP41.1545C105W1BW2‐Y120C120KUF.5152900‐

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