SPCC SPCD Carbon Steel Strip Coil
Hot-rolled coils, also known as hot-rolled coils, are strips made of slabs (mainly continuous casting slabs) as raw materials, which are heated by rough rolling mills and finishing mills. The hot steel strip coming out of the last rolling mill of finishing rolling is cooled to a set temperature by laminar flow, and is rolled into a steel strip coil by a coiler.
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Product Description

Cold-rolled coils are produced by rolling hot-rolled coils below the recrystallization temperature. Since there is no heating in the production process, there are no defects such as pitting and iron oxide scale that often occur in hot rolling, and the surface quality is good and the finish is high. The dimensional accuracy of cold-rolled products is high, and the performance and structure of the products can meet some special requirements, such as electromagnetic properties, deep drawing properties, etc. Commonly used grades are: SPCC; SPCD; SPCE; ST12-15; DC01-06.


Hot-rolled coil has excellent properties such as high strength, good toughness, easy processing and good weldability, so it is widely used in shipbuilding, automobile, bridge, construction, machinery, pressure vessel and other manufacturing industries. Common materials are Q235B, Q345B, SPHC, 510L, Q345A, Q345E, etc. 


Classification of hot rolled coils:

Hot-rolled coils can be divided into: straight hair coils and finishing coils (divided coils, flat coils, slit coils);

According to different materials and properties, it can be divided into: ordinary carbon structural steel, low alloy steel, alloy steel;

According to different uses, it can be divided into: cold forming steel, structural steel, automobile structural steel, corrosion-resistant structural steel, mechanical structural steel, welded gas cylinder and pressure vessel steel, pipeline steel, etc.


Corresponding grades and uses of different types of hot rolled coils:

Type

International Standard Number

Grade

Use

Hot rolled mild steel

JIS G3131

SPHC

Suitable for manufacturing cold-formed parts.

SPHD

SPHE

DIN 1614(EN10111)

STW22(DD11)

STW23(DD12)

STW24(DD13)

General structural steel

JIS G3101

SS 330

For general structural parts such as buildings, bridges, ships, vehicles, etc.

SS 400

SS 490

SS 540

DIN 17100 (EN10025)

St 33(S185)

St 37-2(S235JR)

St 37-3(S235JO)

St 44-2(S275JR)

St 50-2(E295)

St 52-3(S355JO)

Welded structural steel

JIS G3106

SM400A

Used for structural parts that require excellent welding performance such as buildings, bridges, ships, vehicles, oil tanks, construction machinery, etc.

SM400B

SM400C

SM490A

SM490B

SM490C

SM490YA

SM490YB

SM520B

SM520C

NSC

Welten590RE

Weldable high-strength steel plates for pressure vessels, oil tanks, construction machinery, mining machinery, pressure water pipes, etc.

Steel for mechanical structures

DIN 17200

C22

For mechanical structural parts used after cutting and other processing and heat treatment.

JIS G4501

C35

——

S20C

Fine grain structural steel

DIN 17102

StE255

Fine grain structural steel suitable for welding.

StE355

Steel strip for steel pipe

JIS G3132

SPHT1

For welded steel pipes.

SPHT2

SPHT3

Steel for automobile structure

JIS G3113

SAPH 310

Used for automotive structural parts such as automotive frames and wheels that require formability and processability.

SAPH 370

SAPH 400

SAPH 440

SEW 092 (EN10149-2)

QStE 340TM(---)

Hot-rolled pellet steel for cold deformation, used for structural parts such as automobile girders that require good cold forming properties and have high or high strength requirements.

QStE 380TM(---)

QStE 420TM(S420MC)

QStE 380TM(S460MC)

QStE 500TM(S500MC)

Steel for boilers and pressure vessels

DIN 17155 (EN10028-2)

HII (P265GH)

In addition to guaranteeing normal temperature performance, it also guarantees mechanical properties at higher temperatures, suitable for steam boiler equipment, pressure vessels with higher working temperature and similar structural parts.

19Mn6(P355GH)

JIS G3103

SB410

JIS G3116

SG295

Welded steel plates for gas cylinders.

SG325

Steel for hull structure

LR,BV

A

Available according to national specifications.

GL,DNV

B

ABS

D

Atmospheric corrosion resistant steel

SEW087 (EN10155)

WTSt37-2(S235J2W)

It is used to manufacture structural parts that require resistance to atmospheric corrosion, such as containers, railway vehicles, oil derricks, and construction machinery.

WTSt52-3(S355J2G1W)

NSC

NAW 400

NAW 490

Sulfuric acid corrosion resistant steel

S-ten2

Containers for the manufacture of hydrogen sulfide-containing media, etc.

Seawater corrosion resistant steel

Mariloy G41A

Used for structural parts such as oil production platforms, ships, seaport buildings, etc.

Mariloy S50A

Case hardened steel

DIN 17210

C10

High-purity low-carbon steel is used for surface carburizing or nitriding and then quenching and hardening to manufacture structural parts with high hardness on the surface, wear resistance and high toughness in the core.

C15

JIS G4051

S09CK

S15CK

High toughness pipeline steel

API 5L

X60

For the production of spiral welded pipes, high toughness pipeline steel for oil pipelines, hot-rolled wide-band steel.

X70

Steel for straight seam welded casing

API 5CT

J55

For manufacturing straight seam welded oil casing.

Hot rolled coil for pipeline

API 5L

Grade A,B

Oil and gas pipelines.

X42,X46,X52

A56,X60,X65

X70


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