PRODUCTS

Seamless pipes

(S)A106 / API 5L Grade B, Grade C
(S)A333 Grade 6, Grade 3
(S)API 5L Grade B, X42, X52, X60, X65, X70 PSL 1 and PSL 2
(S)A335 P1, P11, P22, P5, P9, P91
(S)A312 TP 304, 304L, 304H, 310, 310H, 310S, 316, 316H, 317L, 321H, 347H, 904L
UNS S31803
254 SMO / UNS S31254
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625 ,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

Studded Pipes

The steel studs are automatically resistance welded to the tube, producing high quality forge welds. Automatic studding machines are capable of handling tube diameters from 60mm o/d to 219mm o/d and standard stud diameter of 12.7mm.

The welding process enables the combination of any grades for studs and tube: carbon, alloy, stainless steels and high nickel alloys. Alloy steel pipes are stress-relieved after studding, according to the relevant specifications for the class and grade of steel used.

Welded pipes (including 100% X-ray)

(S)A387 Grade 11, 22, 5, 9, 91
(S)A312 / (S)A358 TP 304H (L), 317L, 321H, 347H, 904L
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

Seamless Tubes

(S)A179
(S)A192
(S)A210 Grade A1
(S)A213 T1, T11, T12, T22, T5, T9, T91
(S)A213 TP 304H (L), 316H (L), 317L, 321H, 347H, 904L, 310, 410
(S)A268 TP 410, 410S Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825
(S)B 111 Grade C70600, C71500, C68700, C44300

Welded Finned Tubes in Type L, KL, LL, G Embedded, Extruded

Fin Tubes are helically wound and continuously welded to the tube by high frequency electric resistance welding of solid or serrated steel fins. This produces an homogeneous , clean and continuous fin – to – tube bond with no additional weld material, for a very efficient heat flow and resistance to corrosion.

This manufacturing process is carried out under strict standards. We also produce finned tubes with intermediate plain portions where required.

The use of high-frequency current results in very localized heating of the tube surface and the edge of the fin. This skin effect produces higher weld speeds, hence post-weld heat treatment is not considered necessary because of the superficial nature of the changes in the microstructure.

Seamless BW fittings

45°LR Elbows
90° SR and LR Elbows
180° SR and LR Elbows
Special Radius Elbows and Return Bends.
Eccentric and Concentric Reducers.
Equal and Reducing Tees
Caps
Special seamless BW parts acc. To Drawing.
(S)A234 Wp11, Wp22, Wp5, Wp9, Wp91, Wp92, WPB
(S)A403 TP 304L, 304H, 310, 316L, 317L, 321H, 347H
(S)A420 WPL3, WPL 6
(S)A815 S31803, S332760, S32205, S32750
UNS S31254 / 254 SMO
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

Welded fittings

45° LR Elbows
90° SR and LR Elbows
180° SR and LR Elbows
Special Radius Elbows and Return Bends.
Eccentric and Concentric Reducers.
Equal and Reducing Tees
Special seamless BW parts acc. To Drawing.
(S)A860 WPHY52, 60, 65, 70
(S)A403 / (S)A358 Tp 304H, 317L, 321H, 347H
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

SW Fittings

45° and 90° Elbows
Tees and Reducing Tees.
Crosses, Coupling , Half Coupling and Caps.
Square Head Plug, Hex. Head Plug, Round Head Plug, Hex. Head Bushing and Flush Bushing.
All Welding Outlets incl. Weldolets, Sockolets, Threadolets and Brancholets
(S)A182 F5, F9, F11, F22, F91
(S)A182 F304H, F317L, F321H, F347H
UNS S31254 / 254 SMO
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

Flanges

All kind of different type of flanges
(S)A694 F42, F46, F52, F60, F65, F70.
(S)A182 F5, F9, F11, F22, F91
(S)A182 F304H, F317L, F321H, F347H
(S)A694 F44 / UNS S31254 / 254 SMO
(S)A694 F51, UNS 31803
(S)A694 F53 / UNS 32750 / 2507
(S)A694 F55 / UNS 32760
(S)A694 F52, F53, F54, 6 Moly,
Alloy C276 / UNS N01276
Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625,
Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811
Alloy 825 / UNS N08825

Plates

(S)A516 Grade 60, 70
(S)A387 Grade 5, 9, 11, 22, 91
(S)A240 TP 304H (L), 316H (L) (Ti), 317L, 321H, 347H, 310S, 410S
Wnr. 1.4301, 1.4306, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550.
(S)A 240 / A 403 WP 309, 310, 310s, 310H.
Wnr. 1.4828, 1.4841, 1.4845.
UNS N08904 – 904L – Wnr 1.4539
UNS N31050 – 25.22.2 – Wnr 1.4466
UNS N31803 – Duplex – Wnr 1.4462
UNS N32750 – Super Duplex – Wnr 1.4410
UNS S31254 / 254 SMO – Wnr 1.4529
(S)A203 Grade A,B,D,E, F
(S)A204 Grade A, B, C
(S)A302 Grade B, C, D
Creusabro M – X120MN12 – Wnr 1.3401
Creusabro 4800, 8000
Hardox 400, 450, 500

Plates
Alloy 20	UNS N08020	Wnr 2.4660
Nickel 200	UNS N02200	Wnr 2.4066
Nickel 201	UNS N02201	Wnr 2.4068
Alloy 400	UNS N04400	Wnr 2.4360
Alloy C276	UNS N10276	Wnr 2.4819
Alloy B2	UNS N10665	Wnr 2.4617
Alloy C4	UNS N06455	Wnr 2.4610
Alloy G30	UNS N06030	Wnr 2.4600
Alloy 600	UNS N06600	Wnr 2.4816
Alloy 625	UNS N00625	Wnr 2.4856
Alloy 800	UNS N08800	Wnr 1.4876
Alloy 800H	UNS N08810	Wnr 1.4958
Alloy 800HT	UNS N08811	Wnr 1.4959
Alloy 825	UNS N08825	Wnr 2.4858

Plates
ASTM B 171 C 70600	70/30 CuNi
ASTM B 171 C 71500	90/10 CuNi
ASTM B 171 C 63000
ASTM B 171 C 61300
ASTM B 171 C 61400
ASTM B 171 C 46400

Bars

ASTM A 182 Grades F11, F22, F5, F9 and F91
16Mo3 , 13CrMo44 , 10CrMo9.10 , 42CrMo4
ASTM A 182 Grades F304H (L), F316H (L), F317L, F321H and F347H
ASTM A 182 grade F409, 410, 430 and 439 Wnr. 1.4000, 1.4003, 1.4006, 1.4016. Heat Resistant ASTM A 182 grade F309(s), F310(s)
Wnr. 1.4841, 1.4845
Alloy C276 / UNS N01276 / Alloy 400 / UNS N04400
Alloy 600 / UNS N06600, Alloy 601 / UNS N06601, Alloy 625 / UNS N06625 / Alloy 800 / UNS N08800, Alloy 800H / UNS N08810, Alloy 800HT / UNS N08811 / Alloy 825 / UNS N08825
Duplex UNS S31803 – Wnr 1.4462
AISI 329 – Wnr 1.4460 / UNS 31050 – Wnr 1.4466 – 25.22.2
Super Duplex UNS 32550, UNS 32750, UNS 32760
UNS S31254 / 254 SMO – Wnr 1.4529
Super Austenitic Alloy 904L – Wnr 1.4539
Titanium ASTM B 348 grade 5 / Nitronic 50, 60 and 70 / Ferralium 255 17-4Ph
UNS N02200 = Nickel 200 / UNS N02201 = Nickel 201
Copper Alloys ASTM B 133 , B 152 , B 187 , B21 , B22 (C93700)

PRODUCTS

Seamless pipes

Studded Pipes

Welded pipes (including 100% X-ray)

Seamless Tubes

Welded Finned Tubes in Type L, KL, LL, G Embedded, Extruded

Seamless BW fittings

Welded fittings

SW Fittings

Flanges

Plates

Bars

Maron Steel Supplies follows your Marking, Colour coding, labelling and certification demands to the letter.

Your instructions are implemented without fail and double checked before shipment. Maron shippes the ordered goods strictly neutral!

Head Office - Holland

Phone Services

Campagneweg 11C

Latin America Operations

Phone Services

Uruguay 16, piso 3, oficina 30