Tubular heaters : Technology

Tubular heating elements are made according to the KANTHAL - OAKLEY technology on the latest patents and solutions in machines and devices from CSM and Kanthal / Granlund. High-quality materials are used for high durability and reliability of work: magnesium oxide, high-class resistance wires and a shroud tube according to specific standards for the heating industry. Electric heating elements manufactured by us meet the requirements of DIN EN 60335-1 (VDE-700-1), have certificates entitling to mark "CE" and "VDE".

Construction of a tubular heating element

Tube
Resistance Coil
Magnesium oxide
Terminal pin
Ceramic insulator
Sealing

Lengths of tubular heating elements

The material of the tube	Diameter of the heating element
The material of the tube	6,4mm	8,5mm	10mm	12mm	16mm
Stainless steel	200-3350	200-4900	250-5200	250-5200	250-6000

Tolerance of the diameter of the heating element:

±0,1mm for diameters 6,4-10,0mm,
±0,2mm for diameters 12,0-16,0mm.

Tolerance of the length of the heating element:

±1,5%,
on special request ±2mm.

VOLTAGE AND RATING POWER

The range of applied voltages: 12V...480V.

Typical used voltages: 24V, 48V, 115V, 230V, 400V, 440V.

The power of the heating element is individually selected depending on the working conditions and length.

The power tolerance in accordance with DIN EN 60335-1 is + 5% -10%. On special ±5%.

Lengths of standard dead zones: 40 / 60 / 80 / 100 / 120 / 150 / 180 / 200 ... 1000mm.

Table of used materials

EN	AISI	Max. Temp. work material
1.4301	304	550°C
1.4541	321	650°C
1.4404	316L	450°C
1.4571	316Ti	500°C
1.4828	309	900°C
1.4876	Incoloy 800	1050°C
2.4858	Incoloy 825	1100°C

CHOICE AND APPLICATION OF TUBULAR HEATING ELEMENTS

When selecting a heating element, it is necessary to specify the following parameters:

application
working temperature
heated medium (gas, liquid, steel form, etc.)
external dimensions, shape
power, voltage
type of attachment and connection

When choosing power, account should be taken of the permissible maximum carrying capacity depending on the operating conditions:

Working environment	Material
Working environment	AISI 316L, 316Ti, 321	Incoloy 800, 825
Stagnant water	10
motion water	14
flowing water	25
Steam generators	6
thin oil	3,5
thick oil	1,2
still air	5	6
Forced air 3m/s	6	7
Forced air 9m/s	9	9

FIXING OF HEATING ELEMENTS

To mount a single tubular heating element, we use fastening bush that ensure safe and secure assembly in the workplace.

Currently, the offer includes over one hundred different types of fastening bushes. We also make fastenings strictly to the customer's order.

Bushes
Material	Plain steel, galvanized, brass, AISI 303, AISI 304
Thread	M10x1, M12x1,25 , M14x1,5 , M16x1,5 , M18x1,5 , M20x1,5, M24x1,5
assembly method	Crimping, Brazing

When mounting several individual heating elements close to each other, we normally use clamping heads / flanges with a specified thread.

These provide easier assembly and better functionality (including electrical connection).

Heads, Mounting flanges
Material	Brass, stainless steel AISI 304, AISI 316L (on request), plain steel ST
Thread	G1" - G2 1/2"
assembly method	Brazing 45Ag (on request 56Ag)

Depending on the size of the head / flange, you can put up to 6 individual heating elements at a time.

An additional way of fixing the heating elements are made to order special fixing plates, round flanges (Dmax = 500mm), rectangular (max 600x400mm), square (up to 400x400mm), casing pipes, etc ...