Z-Group Steel holding is the noteworthy successor of a long tradition of Czech-Moravian metallurgical and ironworking companies, including: Z-Group Steel holding is the noteworthy successor of a long tradition of Czech-Moravian metallurgical and ironworking companies, including:
Válcovny trub Chomutov founded by the Mannesmann company in 1890
Zelezárny Hrádek
founded by entrepreneur Rudolf Hudlickyh in 1900
Zelezárny Vaselí founded in 1962
We are engaged in the manufacturing and processing of: We are engaged in the manufacturing and processing of:
TUBES - HOT EXTRUDED TUBES - HOT EXTRUDED
BARS BARS
SPECIAL PROFILES
TUBES - SEAMLESS CARBON & ALLOY STEEL TUBES - SEAMLESS CARBON & ALLOY STEE
TUBES - COLD DRAWN TUBES - COLD DRAWN
WELDED WELDED
ZINC DIPPING
SPECIAL PROFILES
ZINC DIPPING
INGOTS
SPECIAL PROFILES
INGOTS
SPECIAL PROFILES
SYSTEM AND PRODUCT CERTIFICATES: SYSTEM AND PRODUCT CERTIFICATES:
Seamless boiler steel tubes - standarts ASTM A335/ASME SA335 Seamless boiler steel tubes - standarts ASTM A335/ASME SA335
Seamless boiler steel tubes - standarts ASTM A335/ASME SA335 Seamless boiler steel tubes - standarts ASTM A335/ASME SA335 ASTM A335 // ASME SA335 // ASTM A 999
STEEL GRADE P1, P2, P11, P12, P22, P36, P5, P91 ASTM A335 // ASME SA335 // ASTM A 999 STEEL GRADE STEEL GRADE STEEL GRADE Outside diameter Outside diameter
Outside NPS mm diameter 10 273 Outside diameter 12 323,8 NPS mm 14 355,6 10 273 16 406,4 12 323,8 18 457 14 355,6 20 508 16 406,4 22 559 18 457 24 610 20 508 22 559 24 610
P1, P2, P11, P12, P22, P36, P5, P91 WALL THICKNESS / WALL THICKNESS
Inch 0,688 0,750 0,812 0,875 1,000 1,062 1,125 1,188 1,250 1,312 1,375 1,406 1,438 1,562 1,750 1,969 2,000 2, 062 2,125 2,200 2,283 2,344 2,441 2,500 2,559 2,677 2,756 2,835 mm 17,48 19,45 20,62 22,23 25.4 26,97 28,58 30,18 31,75 33,32 34,93 35,71 WALL 36,53 39,67 44,45 50,01 50,80 52,37 THICKNESS 53,98 55,88 58,00 59,54 62,00 63,50 65,00 68,00 70,00 72,00 THICKNESS / WALL Inch 0,688 0,750 0,812 0,875 1,000 1,062 1,125 1,188 1,250 1,312 1,375 1,406 1,438 1,562 1,750 1,969 2,000 2, 062 2,125 2,200 2,283 2,344 2,441 2,500 2,559 2,677 2,756 2,835 mm 17,48 19,45 20,62 22,23 25.4 26,97 28,58 30,18 31,75 33,32 34,93 35,71 36,53 39,67 44,45 50,01 50,80 52,37 53,98 55,88 58,00 59,54 62,00 63,50 65,00 68,00 70,00 72,00
Valid for steel grade P5 and P91 / Valid for steel grade P5 and P91 Outside
diameter Valid for steel grade P5 and P91 / Valid for steel grade P5 and P91 Outside diameter
Outside NPS mm diameter 10 273,1 Outside diameter 12 323,8 NPS mm 14 355,6 10 273,1 16 406,4 12 323,8 14 355,6 16 406,4 ASTM A335
Inch mm
0,875 22,23
1,000 25.4
1,062 26,97
1,094 27,79
1,125 28,58
Inch mm
0,875 22,23
1,000 25.4
1,062 26,97
1,094 27,79
1,125 28,58
// ASME SA335
ASTM A 999// ASME SA335 A335 ASTM A 999
WALL THICKNESS / WALL THICKNESS 1,188
1,250
1,312
1,375
1,406 35,71
1,438 36,53
1,562 39,67
1,750 44,45
1,188 30,18
1,250 31,75
1,312 33,32
1,375 34,93
1,406 35,71
1,438 36,53
1,562 39,67
1,750 44,45
30,18 THICKNESS 31,75 33,32 34,93 WALL / WALL THICKNESS
Standard specification for seamless ferritic alloy-steel pipe for high temperature service.
Standard specification for seamless ferritic alloy-steel pipe for high temperature service.
Specification for General for soecialized alloyfor and stainless steel pipe. Standard specification for requirements seamless ferritic alloy-steel pipe high temperature service.
Standard specification for seamless ferritic alloy-steel pipe for high temperature service.
Specification for General requirements for soecialized alloy and stainless steel pipe.
Standard specification for seamless ferritic alloy-steel pipe for high temperature service.
Seamless carbon steel tubes - standards ASTM / ASME/API 5L Seamless carbon steel tubes - standards ASTM / ASME/API 5L
Seamless carbon steel tubes - standards ASTM / ASME/API 5L Seamless carbon steel tubes - standards ASTM / ASME/API 5L ASTM A53 / ASME SA53
STEEL GRADE STEEL GRADE
STEEL GRADE STEEL GRADE
A ASTM A53 /BASME SA53 A B
PSL 1
STEEL GRADE APIGRADE 5L STEEL
STEEL GRADE STEEL GRADE
Outside diameter Outside NPS mm diameter 10 273 Outside diameter 323,8 12 mm NPS 355,6 14 273 10 406,4 16 323,8 12 457 18 355,6 14 508 20 406,4 16 559 22 457 18 610 24 508 20 559 22 610 24
ASTM A252 / ASME SA252
ASTM A333 / ASME SA333
A Gr 2 Gr 1 ASTM A106 /B ASME SA106 ASTM A252 Gr / ASME / ASME SA333 3 SA252 ASTM A333Gr 6 C A Gr 2 Gr 1 Manufacturer is authorized to useBmonogram API Spec. 5L - Licence number 5L - 0286 - Manufacturer 5L - Licence Gr 3 is authorized to use monogram API Spec.Gr 6 number 5L - 0286 C Manufacturer is authorized to use monogram API Spec. 5L - Licence number 5L - 0286 - Manufacturer is authorized to use monogram API Spec. 5L - Licence number 5L - 0286
API 5L
Outside diameter
ASTM A106 / ASME SA106
A B X42 A X46 B X42 X46
PSL 1
PSL 2
X52 X56 X60 X52 X56 X60
BN PSL 2 X42N X52N BN X60N X42N Standard pressure up to 20.5 MPa (2 970 psi) - Standard pressure up to 20.5 MPa (2 970 psi) X52N X60N Standard pressure up to 20.5 MPa (2 970 psi) - Standard pressure up to 20.5 MPa (2 970 psi)
WALL THICKNESS / WALL THICKNESS
Inch 0,375 0,438 0,500 0,562 0,625 0,688 0,750 0,812 0,844 0,875 1,000 1,125 1,188 1,250 1,406 1,438 1,500 1,584 1,781 1,999 2,000 2,062 2,125 2,200 2,283 2,344 2,441 2,500 2,559 2,677 2,756 2,835 mm 9,53 11,13 12,70 14,27 15,88 17,48 19,05 20,62 21,44 22,23 25,40 28,58 30,18 31,75 35,71 36,53THICKNESS 38,10 40,49 45,24 50,01 50,80THICKNESS 52,37 53,98 55,88 58,00 59,54 62,00 63,50 65,00 68,00 70,00 72,00 WALL / WALL Inch 0,375 0,438 0,500 0,562 0,625 0,688 0,750 0,812 0,844 0,875 1,000 1,125 1,188 1,250 1,406 1,438 1,500 1,584 1,781 1,999 2,000 2,062 2,125 2,200 2,283 2,344 2,441 2,500 2,559 2,677 2,756 2,835 mm 9,53 11,13 12,70 14,27 15,88 17,48 19,05 20,62 21,44 22,23 25,40 28,58 30,18 31,75 35,71 36,53 38,10 40,49 45,24 50,01 50,80 52,37 53,98 55,88 58,00 59,54 62,00 63,50 65,00 68,00 70,00 72,00
LENGTH RANGE
Random - up to 11 (12)m Fixed - after agreement with tolerance -0/+50mm
LENGTH RANGE
Random - up to 11 (12)m Fixed - after agreement with tolerance -0/+50mm
LENGTH RANGE TUBE ENDS LENGTH RANGE
Random - upagreement to 11 (12)m Fixed30º - after agreement withwall tolerance -0/+50mm Plain or after with bevel +5º/-0º in the whole thickness range. After agreement tube Random - up tobe 11 protected (12)m Fixed - by afterplastic agreementcaps with tolerance -0/+50mm ends can or plastic bevel protectors. Plain or after with bevel 30º +5º/-0º whole wall thickness range. After tube ends can bethickness protected by plastic caps or plastic bevelagreement protectors. Plain oragreement after agreement within the bevel 30º +5º/-0º in agreement the whole wall range. After tube ends can be byinside plasticsurface caps orbyplastic bevel Descaled on protected outside and grinding orprotectors. pickling with non-destructive testing acc ASTM E213. Plain or after agreement withcan bevel 30º in the wholeby walltransparent thickness range. Afteroragreement ends can beas protected by plastic or plastic bevel protection. protectors. Outside surface be+5º/-0º protected blacktube lacquer short timecapscorrosion Descaled on outside inside surfaceand by grinding or pickling with non-destructive testing acc or ASTMpickling E213. Descaled onandoutside inside surface by grinding with non-destructive testing acc ASTM E213. Outside surface can be protected by transparent or black lacquer as short time corrosion protection. Outside surface can be protected by transparent or black lacquer as short time corrosion protection.
TUBE ENDS
TUBE ENDS TUBE ENDS
SURFACE SURFACE
SURFACE SURFACE
Descaled on outside and inside surface by grinding or pickling with non-destructive testing acc ASTM E213. Outside surface can be protected by transparent or black lacquer as short time corrosion protection.