Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association

 
 

DIN and EN steel pipe standards Schulte and accessories


 

DIN standard

EN standard

Product

 

DIN standard

EN standard

Product

Steel pipes for water

 

 

Precision steel tubes

 

2440/2441

10255

Threaded pipes

 

2391

10305-1

Seamless cold-drawn

2444

10240

Hot-dip galvanized coatings

 

 

 

precision steel tubes

2460

10224

Steel pipes, pipe accessories

 

2393

10305-2

Welded drawn precision

 

 

and fittings for water and

 

 

 

steel tubes

 

 

drinking water

 

2394

10305-3

Welded size-rolled precision

 

 

 

 

 

 

steel tubes

Seamless p

ressure-resistant pipes/tubes

 

2391/1630

10305-4

Seamless tubes for hydraulic

1629/1630

10216-1

Pipes/tubes of unalloyed

 

 

 

and pneumatic pressure lines

 

 

steels with defined properties

 

2395

10305-5

Welded size-rolled square

 

 

at room temperature

 

 

 

and rectangular

17175

10216-2

Boiler pipes/tubes

 

 

 

precision steel tubes

17179

10216-3

Pipes/tubes of fine-grained steels

 

 

 

 

17173

10216-4

Pipes/tubes of low-

 

Line pipes for gas and f

ammable liquids

 

 

temperature steels

 

2470-1

10208-1

Gas line pipes for

17458

10216-5

Austenitic stainless steel

 

 

 

permissible working

 

 

pipes/tubes

 

 

 

pressures up to 16 bar

Welded pressure-resistant pipes/tubes

 

 

 

 

1626

10217-1

Pipes/tubes of unalloyed

 

2470-2/

10208-2

Line pipes for gas

 

 

steels with defined properties

 

17172

 

and oil onshore

 

 

at room temperature

 

 

 

 

17457

10217-7

Austenitic stainless steel

 

 

 

 

 

 

pipes/tubes

 

 

 

 

Tubes for structural ap

plications

 

Pipes/tubes for machining and mechanical engineering

59410

10210

Hot finished structural hollow

 

Non-

10294-1

Carbon steel pipes/tubes for

 

 

sections (square

 

standardized

 

mechanical engineering

 

 

and rectangular)

 

 

 

(hollow bars for machining)

17121

10210

Seamless hot finished

 

 

 

 

 

 

structural hollow sections

 

Pipe/tube accessories

 

 

 

(circular)

 

2950

10242

Malleable cast iron fittings

59411

10219

Cold formed structural hollow

 

 

 

 

 

 

sections (square and

 

2605, 2615,

10253

Welded fittings (elbows,

 

 

rectangular)

 

2616,

 

tees, reducers,

17120

10219

Welded cold formed structural

 

28011

 

caps, torispherical heads)

 

 

hollow sections (circular)

 

 

 

 

4427

39

Scaffolding tubes

 

Steel flange.

 

 

1615

non-

Welded tubes with no specific

 

2630-2638,

1092-1

Round steel flanges

 

standardized

requirements

 

2527, 2573,

 

(welding neck flanges, blind

2395

10305-5

Square and rectangular tubes

 

2576, 2642,

 

flanges, plain flanges,

17455

10296-2

Welded stainless steel tubes

 

2673

 

slip-on flanges, threaded

17456

10297-2

Seamless stainless steel

 

 

 

flanges)

 

 

tubes

 

 

 

 

 

Seamless heavy-wall tubes

Tubes for steel construction, mechanical engineering and compressive stresses in accor­dance with EN 10210/EN 10297-1/EN10216-3. Can be used in steel construction and mechanical engineering where acceptance testing is required and with additional testing to 3.2 (formerly 3.1.C) under the European Pressure Equipment Directive (PED)

Steel grades

■  S355J2H/E355

■  P355N/S355J2H/E355

Dimensions in accordance with EN 10220/DIN 2448

■  10.2 - 660 mm OD

■  1.8 - 100 mm wall

Welded steel tubes

Welded circular steel tubes made of unalloyed steels in accordance with EN 10219/ DIN 1626

Steel grades

■   S235JRH (St 37.0)

■   S355J2H (St 52.0)

Dimensions in accordance with EN 10220 (DIN 2458)

■   10.2 - 508 mm OD

■   2.0 - 11 mm wall

Inspection certificate

■   APZ 3.1 in accordance with EN 10204

(formerly 3.1.B)

Seamless hollow bars for machining

For turning with short chip breaking. The finished turned part is suitable for a wide range of heat treatments and coat­ings

Steel grade ■20MnV6

Dimensions

■  32 - 400 mm OD

■  3.5 - 52.5 mm wall guaranteed achievable finish-turned dimensions for components up to three times the length of the OD, max.

200 mm component length.

 

Inspection certificate ■ APZ 3.1 in accordance with EN 10204 (formerly 3.1.B)

 

 

Seamless cold-drawn precision steel pipes/tubes

in accordance with EN 10305-1/ DIN 2391

Steel grades

■  E235+C (St 35 BK)

■  E235+N (St 35 NBK)

■  E355+C (St 52 BK) on request

Dimensions

■  4 - 200 mm OD

■  0.5 - 15 mm wall

Inspection certificate

■  Test report 2.2 in accordance with EN 10204

Options

Dimensions up to 380 mm OD and 25 mm wall thickness and low-carbon steel grades E215 (St 30 Al), fine grain grades and case hardening/ heat-treatable steels manu­factured to order

Seamless cold-drawn HPL precision steel pipes/tubes

Can be used without restric­tions under the PED up to 500 bar and in the automotive industry in accordance with EN 10305-4/DIN 1630/2391

Steel grade

■   E235+N/St 37.4 NBK Dimensions

■   4 x 0.5 mm - 80 x 10 mm

Inspection certificate

■   APZ 3.1 (formerly 3.1.B)

Options

■   bonderized

■   yellow

■   white chromated

Manufactured to order

■   green chromated

■   E355+N/St 52.4

Welded cold-drawn precision steel pipes/tubes

in accordance with EN 10305-2 (DIN 2393)

Steel grades

■   E195 (St 34-2)

■   E235 (St 37-2)

■   E275 (St 44-2)

■   E355 (St 52-3)

Dimensions

■   4 x 0.5 - 150 x 10 mm

Inspection certificate

■   Test report 2.2 in accordance with EN 10204

Options

■   +C (BK)

■   +N (NBK)

Welded size-rolled precision steel pipes/tubes

in accordance with DIN 2394 (EN 10305-3)

Steel grades

■  St 34-2

■  St 37-2

Supplied in the BKM-soft condition (E220+CR2 and E260+CR2), suitable for limited cold bending

Dimensions

■  10 - 120 mm OD

■  1 - 5 mm wall

Special options manufactured to order

■  Dimensions up to 200 mm OD and 8 mm wall thickness

■  Steel grades St 44-2 and St 52-3

■  Supplied in BKM-hard (+CR1) and annealed (+A)

■  Hot-dip galvanized, galvanized and chrome-plated pipes/ tubes

 

 

Special supporting roller tubes

Welded size-rolled precision steel tubes with special con­centricity in accordance with EN 10305-3 (DIN 2394)

Steel grade

■         E235 (St 37-2)

Dimensions

■         50 - 219.1 mm OD

■1.6 - 12.5 mm wall

Welded size-formed precision steel tubes with square and rectangular cross-sections

for construction and furniture making with surface quality requirements and tolerances in accordance with EN 10305-5 (DIN 2395)

Steel grades

■   E195 (St 34-2)

■   E235 (St 37-2)

■   E275 (St 44-2)

■   E355 (St 52-3)

Dimensions

■square:

10 x 10 x 1 - 100 x 100 x 5 mm

■   rectangular:

20 x 10 x 1 - 120 x 80 x 5 mm

Delivery conditions BKM-hard (CR1), annealed N (+A) and made of TM strip E220+CR2, E260+CR2

Special options:

hot-dip galvanized, galvanized

and chrome-plated tubes

Hollow-drawn bright free- machining steel tubes

in accordance with DIN 1651

Steel grades

■   9SMn28

■   9SMn36

on request also in lead-alloyed finishes manufactured to order.

Dimensions

z round exterior and interior:

■   5 - 125 mm OD

■   2 - 109 mm inside diameter (ID)

■   1 - 25 mm wall

z hexagonal exterior, round interior:

■   8 - 115 mm width across flats

■   3 - 95 mm ID

■   2 - 25 mm wall

 

Tubes

hydraulic and pneumatic

 

 

Seamless cylinder tubes (HP tubes)

manufactured from seamless precision steel tubes through honing or roller-burnishing in accordance with EN 10305-1 (DIN 2391)

Steel grade

■   E355+SR (St 52 BK+S)

Dimensions

■   35 - 280 mm OD

■   25 - 250 mm ID

■   5 - 20 mm wall

Tolerances

■   DIN 2391 OD

■   Standard H8 ID

■   low wall thicknesses, in part H9-H11

■   max. +/-10% eccentricity

Welded cylinder tubes (HPS tubes)

Manufactured from welded pre­cision steel tubes through addi­tional precision drawing in accordance with EN 10305-2 (DIN 2393)

Steel grade

■   E355+C (St 52-3 BK)

Dimensions

■   30 - 100 mm OD

■   25 - 90 mm ID

■   2.5 - 7.5 mm wall

Tolerances

■   DIN 2393 OD

■   H9/H10 ID

■   max. +/-4% eccentricity

Piston rods

Hard chrome-plated piston rods

Steel grades

■   C45E to 18 mm dia.

■   20MnV6 above 18 mm dia.

Chrome layer thickness

■   17 +/-3 p to 18 mm dia.

■   25 +/-5 p above 18 mm dia.

Dimensions

■   6 - 200 mm dia.

Special options Steel grades

■   42CrMo4+QT and X22CrNi13 hard chrome-plated

■   C45E and 42CrMo4+QT induction hardened

■   Dimensions greater than 200 mm dia.

 

 

HPZ tubes

Seamless precision steel tubes for the manufacture of cylinder tubes in accordance with EN 10305-1 (DIN 2391)

Steel grades

■   E355 (St 52)

■   E460N (StE 460)

Dimensions

■   50 - 380 mm OD

■   40 - 340 mm ID

■   5 - 25 mm wall

Delivery conditions

■   BK (+C)

■   BKS (+SR)

HPK tubes

Seamless precision steel tubes for the manufacture of pistons and telescopic cylinders in accordance with EN 10305-1 (DIN 2391)

Steel grades

■   E355 (St 52)

■   E460N (StE 460)

■   C45E (CK45)

Dimensions

■   40 - 300 mm OD

■   3 - 25 mm wall

Delivery conditions

■   BK (+C)

■   BKS (+SR)

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