We provide great, on time services to our valuable customers.

Specification for Oxygen Lancing Pipes

Manufacture

This Indian Standard IS-10577 was adopted by the Indian Standards Institution on 30 November 1982, after the draft finalized by the Steel Tubes, Pipes and Fittings Sectional Committee had been approved by the Structural and Metals Division
This Indian Standard has been prepared to meet the requirements of lancing pipes used by steel
Requirements for ceramic and other special coating to enhance the life of the pipes will be added in due course after collecting the necessary
This standard contains clauses 2.4, 11.1 and 12.1 which call for agreement between the purchaser and the
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated,expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

Scope

This standard covers the requirements of butt-welded, screwed and socketed and plain end mild steel pipes intended for use on oxygen

Terminology

For the purpose of this standard, the following definitions shall
For the purpose of this standard, the following definitions shall
Black Pipe – Pipe as manufactured, but without any subsequent surface
Length of Screwed and Socket Pipe – The length of the pipe inclusive of the
- Note 1. The length of the pipe inclusive of the sockets means the pipe length measured with socket fitted at one end to handling-tight.
- Note 1. Handling tight means that the socket is so tight fitting that it should not fall down during handling or
Nominal Bore – A size reference denoting the approximate bore of the pipe. For each size of pipe, the outside diameter is fixed by the corresponding screw thread dimensions of IS : 554-1975 and therefore, the actual bore of each size of pipe will vary according to the
Random Length – Normal manufacturing lengths which may vary over a range of several meters. Alternatively, a length range agreed to between the purchaser and the
Socket – The screwed coupling utilized in joining the pipes
- Note 1. The term ‘socket’ is synonymous with the term ‘coupler’.
Pipe (Tube) – A long, hollow, open-ended object of circular or other cross-section. The term ‘pipe’ is synonymous with the term ‘tube’.

Designation

Mild steel pipes covered by this standard shall be designated by their nominal bore, and shall be further classified as ‘light’, ‘medium’ and ‘heavy’ depending on the wall
Mild steel socket shall be designated by the respective nominal bore of the pipe for which it is

Supply of Material
- General requirements relating to the supply of mild steel pipes and sockets shall conform to IS :1387-1967.
- Lancing pipes shall be supplied with any of the following combinations as specified by the customer:

Plain end, and
Both ends screwed and one end socket

Manufacture

Pipes shall be manufactured from mild steel made by open hearth, electric or any of the oxygen
Steel pipes and sockets shall be manufactured by one of the following processes:

Continuous oxy-acetylene gas welded pipes (OAW),
Electric resistance welded(ERW),
High frequency induction welded(HFIW), and
Hot-finished welded (HFW).
- Note 1. Pipes made by manual welding are not covered by this
- Note 2. Hand welding of sockets may be permitted provided the test requirements for the sockets covered by the standard are complied
- Note 3. Sockets may also be manufactured from rods provided the test requirements for the sockets covered by the standard are complied

Dimensions

The dimensions of pipes shall be in accordance with Table 1,2 and 3 subject to the tolerances permitted in 8. Dimensions of sockets shall be in accordance with Table

Oxygen Lancing Tube and Lancing Pipe

8mm NB MS Lancing Tubes as per IS - 10577/82

Both side threaded and one side socketed; one side protected with a plastic cap. Length – 3m to 12m as desired by the customer.

10mm NB MS Lancing Tubes as per IS - 10577/82

Both side threaded and one side socketed; one side protected with a plastic cap. Length – 3m to 12m as desired by the customer

15mm NB MS Lancing Tubes as per IS - 10577/82

Both side threaded and one side socketed; one side protected with a plastic cap. Length – 3m to 12m as desired by the customer.

20mm NB MS Lancing Tubes as per IS - 10577/82

Both side threaded and one side socketed; one side protected with a plastic cap. Length – 3m to 12m as desired by the customer.

25mm NB MS Lancing Tubes as per IS - 10577/82

Both side threaded and one side socketed; one side protected with a plastic cap. Length – 3m to 12m as desired by the customer

4mm ID & 6mm OD lancing tubes for for concast nozzle

Both sides are plane and used for nozzle cleaning. Length – 5m

6mm ID & 8mm OD lancing tubes for for concast nozzle

Both sides are plane and used for nozzle cleaning. Length – 5m

Nominal masses of ‘light’, ‘medium’, and ‘heavy’ black pipes shall be as specified in Table 1,2 and 3

	Table 1. Dimensions and Nominal Masses of Black Steel Pipes (Light)
	Nominal Bore		Outside Diameter				Thickness		Mass of Black Pipes
	mm		Max (mm)		Min (mm)		mm		Plain End (kg/m)		Screwed and Socketed (kg/m)
	6		10.1		9.7		1.8		0.361		0.364
	8		13.6		13.2		1.8		0.517		0.521
	10		17.1		16.7		1.8		0.674		0.680
	15		21.4		21.0		2.0		0.952		0.961
	20		26.9		26.4		2.35		1.41		1.42
	25		33.8		33.2		2.65		2.01		2.03
	Note-Dimensions and masses are in accordance with ISO 65-1981.
	Table 2. Dimensions and Nominal Masses of Black Steel Pipes (Medium)
	Nominal Bore		Outside Diameter				Thickness		Mass of Black Pipes
	mm		Max (mm)		Min (mm)		mm		Plain End (kg/m)		Screwed and Socketed (kg/m)
	6		10.6		9.8		2.0		0.407		0.410
	8		14.0		13.2		2.35		0.650		0.654
	10		17.5		16.7		2.35		0.852		0.858
	15		21.8		21.0		2.65		1.22		1.23
	20		27.3		26.5		2.65		1.58		1.59
	25		34.2		33.3		3.25		2.44		2.46
Note-Dimensions and masses are in accordance with ISO 65-1981.
Table 3. Dimensions and Nominal Masses of Black Steel Pipes (Heavy)
Nominal Bore		Outside Diameter				Thickness		Mass of Black Pipes
mm		Max (mm)		Min (mm)		mm		Plain End (kg/m)		Screwed and Socketed (kg/m)
6		10.6		9.8		2.65		0.493		0.496
8		14.0		13.2		2.9		0.769		0.773
10		17.5		16.7		2.9		1.02		1.03
15		21.8		21.0		3.25		1.45		1.40
20		27.3		26.5		3.25		1.90		1.91
25		34.2		33.3		4.05		2.97		2.99
Note-Dimensions and masses are in accordance with ISO 65-1981.

Table 4. Dimensions of Sockets
Nominal Bore	Outside Diameter (min)	Length (min)
6	15	19
8	18	27
10	22	28
15	27	37
20	32.5	39
25	39.5	46

Tolerances on Thickness and Mass

The following manufacturing tolerances shall be permitted on the pipes and sockets:

Thickness

Light pipes

Medium and heavy pipes

± Not limited 8 percent

± Not limited 10 percent

Masses ( No limit on + side)

Light pipes

Medium and heavy pipes

For quantities per load of 10 tones, Min (light series)

For quantities per load of 10 tones, Min (medium & heavy series)

± Not limited 8 percent

± Not limited 10 percent

– 5 percent

– 7.5 percent

Note 1. For the purpose of weighting lots of 10 tonnes or more, the material may be divided into convenient sub-lots and weighted separately. Finally the tolerance may be applied to the total weight of lot.

Joints

All screwed tubes and sockets shall be supplied with pipe threads conforming to IS : 554- 1975. Gauging practice shall be in accordance with IS : 8999-1979.

Unless specified otherwise, pipes shall be supplied screwed with taper threads and sockets with parallel
- Each pipe shall be supplied with one socket and one plastic protective ring. The ends of sockets shall be chamfered internally to prevent damage to the leading thread. Tapping of sockets shall be done from one endHowever, in the case of ‘light’ tubes, the application of taper pipe threads may be modified by permitting the outside diameter of the pipes to be within the limits shown in col 2 and 3 of Table 1.Where the pipe approaches the lower limit of outside diameter, some incomplete threads (perfect at root and imperfect at the crest) may be expected from and beyond the gauge plane. Such incomplete threads shall not be regarded as justification for rejection of the pipes. Also the minimum length of threads in ‘light’ pipes shall be 80 percent of that specified in IS : 554-1975.

Lengths

Random Length – The pipes shall be supplied in random lengths from 4 to 8 meters, unless otherwise agreed to between the manufacturer and the purchaser.

Hydraulic Test

The pipes shall be supplied in random lengths from 4 to 8 meters, unless otherwise agreed to between the manufacturer and the
Pipes shall withstand a test Pressure of 5 MPa (see NOTE) without showing defects of any kind. The pressure shall be applied by approved means and maintained sufficiently long for proof and inspection. The testing apparatus shall be fitted with an accurate pressure indicator, and provision shall be made for its accuracy to be verified by the purchaser, if

Note – 1 Mpa=0.102kgf/mm2 10.2kgf/cm2

Test on Finished Pipes and Sockets

The following tests shall be conducted by the manufacturer on finished pipes and
The tensile strength of length, cut from selected pipes when tested in accordance with IS

:1894-1972 shall be at least 320 MPa ( 320 N/mm2 )

The elongation percentage on a gauge length of 5.65√ So. (Where so is the original cross- sectional area of the test specimen) shall be not less than 12
Bend Test on Pipes – When tested in accordance with IS: 2329-1963, the finished pipes shall be capable of withstanding the bend test without showing any signs of fracture or failure. The pipes shall be bent with the weld at 90° to the plane of bending. The pipes shall not be filled for this

When tested in accordance with IS:2329-1963, the finished pipes shall be capable of withstanding the bend test without showing any signs of fracture or failure. The pipes shall be bent with the weld at 90° to the plane of bending. The pipes shall not be filled for this test.

Expansion Test on Sockets – At the option of the manufacturer any one of the tests described in

Drift Expanding Test – It shall be carried out on sockets, blacks for sockets in accordance with IS : 2335-1963 on a conical mandrel having an include taper on diameter 1 in 16 and the minimum increase in outside diameter after expansion shall be 2 percent.

Taper Screw Plug Test – Sockets shall be capable of withstanding the expansion test as described below without showing any sign of fracture or failure. The test shall consist of screwing the selected socket on a taper screw plug.

The threads of the socket shall be thoroughly clean and free from foreign matter. Should the threads show sign of burr, this shall be removed by rotating the socket with both hands. The socket shall then be further rotated five complete turns beyond hand tightness, either by means of a pipe wrench of an adequate length to operate the test with gradual turning or by a power machine giving an appropriate leverage. The wrench shall not be hammered.

The Plugs shall be manufactured from steel and shall be hardened to give a Vickers hardness between 700 and 800 HV when determined by applying a load of 30kgf in accordance with IS :1501-1968.

The plugs shall be in accordance with the dimensions given in Table 5. The thread shall be ground after the plugs are case hardened, and the thread form and angle of taper shall be in accordance with the appropriate dimensions and tolerances specified in IS :554- 1975.

For routine testing, use may be made, if so desired, of unhardened steel plugs in accordance with dimensions given in Table 5 and having 1975.

In cases of dispute, however, the test shall be carried out with the hardened plugs specified in above

Workmanship

The pipes shall be cleanly finished and reasonably free from scale. They shall be reasonably straight, free from cracks, surface flaws, laminations and other defects. The screw threads of screwed pipes and sockets shall be clean and well cut. The ends shall be cut cleanly and square with the axis of the

Sampling of Tubes and Sockets

Lot – For the purpose of drawing samples, all lancing pipes bearing the same designation and weight classification and also manufactured under a single process shall be grouped together to constitute a lot. Each lot shall be sampled separately and assessed for conformity to this

Sampling and Criterion for Conformity – Unless otherwise agreed to between the manufacturer and the purchaser the procedure for sampling of pipes for various tests and criteria for conformity shall be as given in IS : 4711-1974.

Marking

Each pipe or each bundle of pipes shall carry legibly the manufacturer’s name or trade- mark.
The different classes of pipes shall be distinguished by color bands which shall be applied as follows before the pipes leave the manufacturer’s works:

‘Light’ pipes Yellow ‘Medium’ pipes Blue ‘Heavy’ pipes Red

The pipes or each bundle of pipes may also be marked with the ISI Certification
- Note 1. The use of the ISI Certification Mark is governed by the provision of the Indian Standards Institution (Certification Marks)Act and the Rules and Regulations made the render. The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by ISI and operated by the producer. ISI marked products are also continuously checked by ISI for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the ISI Certification Mark may be granted to manufactures or processors, may be obtained from the Indian Standards Institution.

Normal Bore(mm)	Gauge Diameter(mm)	Threads per 25.4 mm	Tolerance on Total Number of Threads	A	B	C	D
Normal Bore(mm)	Gauge Diameter(mm)	Threads per 25.4 mm

6	9.728	28	2	1.8	13	11	7
8	13.157	19	2	2.8	19	13	10
10	16.662	19	2	2.8	19	16	13
15	20.955	14	2	3.6	25	19	14
20	26.441	14	2	3.6	25	29	17
25	33.249	11	2	4.6	32	29	21

Packing

Unless otherwise agreed to between the manufacturer and the purchage, the pipes shall be bundled for the transport and packed in accordance with IS : 4740 1979. However, the pipes of same size and class shall be bundled together and the capped ends shall be protected by gunny cloth. Each smallest bundled shall contain preferably not more than 20 pipes.

Coating

The lancing pipes:

shall have no internal coating,
shall be free from grease and oil, and
may be externally coated as specified by the

Enquiry and Order

The following information shall be furnished by the consumer while ordering the pipes:

Class of pipe,
Nominal bore,
Length,
End condition, and
Packaging

Stainless Steel Seamless Pipes, Stainless Steel Seamless Tubes, Carbon Steel Pipes, Carbon Steel Tubes, Alloy Steel Seamless Pipes, Alloy Steel Seamless Tubes, Coil Sheet Plates, Pipes Fittings, Flanges, Fasteners, Angle Channels, Bars, Screwed Fittings, Forged Fittings, Butted Fittings, Stainless Steel Sheets, Stainless Steel Rods, Stainless Steel Plates, Special Steel, Carbon Steel Welded Pipes, Carbon Steel Welded Tubes, Seamless Carbon Steel Pipes, Carbon Steel Saw Pipes, Carbon Steel Erw Pipes, Steel Sheets, Steel Plates, Carbon Steel Coil Sheet Plates, SS Coils Sheet, Ss Coils Plate, Hot Rolled Steel Coils Sheets Plates, Alloy Steel Seamless Pipes Tubes, Carbon Steel Pipes Fittings, Industrial Stainless Steel Pipe, Stainless Steel Pipes Fittings, Stainless Steel Plate Flanges, Stainless Steel Reducing Flanges, Industrial Stainless Steel Flanges, Stainless Steel Spectacle Flanges, Stainless Steel Pipe Flanges, Steel Flanges, Stainless Steel Flanges, Stainless Steel Channel, Stainless Steel Angle, Stainless Steel U Channel, Stainless Steel But Welded Pipe Fitting, Steel But Weld Pipe Fittings, But Weld Fittings, Stainless Steel Fittings, Stainless Steel Socket Weld Fittings, Stainless Steel Forged Fittings, Steel Forged Fittings, Stainless Steel Forged Pipe Fittings, Steel Forged Pipe Fittings, Stainless Steel Screwed Flanges, Stainless Steel Screwed Bars Flange, Stainless Steel Screwed Fittings, Steel Screwed Fittings, Industrial Stainless Steel Sheets, Industrial Stainless Steel Coils, Carbon Steel Lsaw Pipe, Carbon Steel HSAW Pipes, Stainless Steel ERW Pipe, Stainless Steel Saw Pipe, Stainless Steel LSAW Pipe, Stainless Steel Hsaw Pipes, Cs Erw Pipe, Cs Saw Pipe, Cs Lsaw Pipe, Cs Hsaw Pipes, Ss Erw Pipe, Ss Saw Pipe, Ss Lsaw Pipe, Ss Hsaw Pipes, Stainless Steel Api Pipe, Carbon Steel Api Pipes, Ss Api Pipes, Cs Api Pipe, Stainless Steel Welded Pipe, Ss Welded Pipe, Cs Welded Pipe, Ss Seamless Pipe, Cs Seamless Pipe, Cs Pipes, As Seamless Pipes, Ss Seamless Tubes, Cs Tubes, As Seamless Tubes, Seamless L Saw Pipe, Seamless Lsaw Pipe, Hsaw Pipes API 5L, X52, X56, X60, X65, X70, X80 / PSL-1, PSL-2, ]

Send us Your Requirement

WELOK STEEL INDUSTRIES LLP’s Steels stocks a wide range of materials and grades. Below are a list of all standard sheets and plates materials and grades we stock