Steel Structure System -

Steel Structure System

High strength · Lightweight performance · Efficient installation · Reduced construction period — applied across warehouses, workshops, cold storage, offices, hotels, labour camps and more.

Q235/Q345

Steel Grade

9 – 180m

Span Range

Q ≤ 32T

Crane Capacity

SA2.5

Shot Blast Grade

6 Types

Frame Systems

The complete structural backbone

VIKKINS Steel Structures are widely applied across various industries, including warehouses, workshops, cold storage facilities, office buildings, hotels, labor camps, schools, and more. Our structures are characterized by high strength, lightweight performance, efficient installation, and a significantly reduced construction period, making them an ideal solution for modern construction demands.

With the philosophy of "Exceptional Quality, Meticulous Service," VIKKINS has successfully completed numerous steel structure projects both domestically and internationally.

Building Component System

VIKKINS Installation and Construction

Rapid construction capability · Responsive after-sales service · 90+ countries delivered

6 Standard Frame Systems

Select by span, height, crane requirement and roof pitch. Each frame can be bolt-connected or welded, with hinge or rigid knee joints.

VKLS-1

Portal Frame

Uniform cross section beam-column, local haunching at node. Various changed slopes of bedding plant pitch, apply to smaller span construction. Heel can be hinge joint, also may be rigid connection.

Span	9M – 18M
Height	3M – 7M
Roof slope	1/20 · 1/10 · 1/5 · 1/3
Bay spacing	6M – 9M

VKLS-2

Crane Frame

Lightweight steel construction with crane. Column is uniform, beam may use heel rigid connection according to DMG-1, BMG-1, BPG specification.

Hoisting capacity	Q ≤ 32T
Span	12M – 24M
Height	3M – 8M
Roof slope	1/20 · 1/10 · 1/5
Bay spacing	6M

VKLS-3

Variable Frame

Variable cross-section steel structural beam-column, use high strength bolt connection, large span, small slope of bedding plant saving indoor space. Heel is hinge joint.

Span	18M – 36M
Height	3M – 9M
Roof slope	1/20 · 1/10
Bay spacing	6M – 9M

VKLS-4

Sandwich Frame

Lightweight steel construction system with sandwich. Column is uniform, roof beam may use heel rigid connection per DMG-1, BMG-1, BPG. Floor beam span is no more than 12M.

Span	12M – 24M
Height	6M – 10M
Roof slope	1/20 · 1/10 · 1/5
Bay spacing	6M

VKLS-5

Mixed Section

Uniform cross section steel structural column, variable cross-section steel beam. Beam-column is hinge joint, soft slope lay, heel is rigid connection — apply to the small span.

Span	9M – 18M
Height	3M – 8M
Roof slope	1/20
Bay spacing	6M

VKLS-6

Super Long Span

Plugging 1 to 4 piece wobble column in midspan can increase span. Heel is hinge joint. Ideal for large warehouses, logistics centres, hangars and sports arenas.

Span	72M – 180M
Height	3M – 8M
Roof slope	1/20 · 1/10
Bay spacing	6M – 9M

H Beam (H-section Steel)

Welded and hot-rolled H-beams form the primary load-bearing members of all Vikkins steel structure systems — columns, rafters, and main frame elements. Available in HW (wide flange), HM (medium flange) and HN (narrow flange) series.

Section Parameters

H

Section Height

B

Flange Width

t1

Web Thickness

t2

Flange Thickness

r

Fillet Radius

kg/m

Unit Weight

6 Standard Frame Systems

Type	Size H×B (mm)	Section dimensions (mm)					Area cm²	kg/m	Inertia cm⁴		Radius cm		Section modulus cm³
Type	Size H×B (mm)	H	B	t1	t2	r	Area cm²	kg/m	Ix	Iy	ix	iy	Wx	Wy
HW	100×100	100	100	6	8	8	21.59	16.9	386	134	4.23	2.49	77.1	26.7
HW	125×125	125	125	6.5	9	8	30.00	23.6	843	293	5.30	3.13	135	46.9
150×150	150	150	7	10	8	39.65	31.1	1620	563	6.39	3.77	216	75.1
175×175	175	175	7.5	11	13	51.43	40.4	2918	983	7.53	4.37	334	112
200×200	200	200	8	12	13	63.53	49.9	4717	1601	8.62	5.02	472	160
250×250	250	250	9	14	13	91.43	71.8	10689	3648	10.81	6.32	855	292
300×300	300	300	10	15	13	118.45	93.0	20010	6753	13.00	7.55	1334	450
350×350	350	350	12	19	13	171.89	134.9	39637	13582	15.19	8.89	2265	776
400×400	400	400	13	21	22	218.69	171.7	66455	22410	17.43	10.12	3323	1120

HM — Medium Flange H Beam

Type	Size H×B (mm)	Section dimensions (mm)					Area cm²	kg/m	Inertia cm⁴		Radius cm		Section modulus cm³
Type	Size H×B (mm)	H	B	t1	t2	r	Area cm²	kg/m	Ix	Iy	ix	iy	Wx	Wy
HM	150×100	148	100	6	9	8	26.35	20.7	995	150	6.15	2.39	134	30.1
HM	200×150	194	150	6	9	8	38.11	29.9	2586	507	8.24	3.65	267	67.6
HM	250×175	244	175	7	11	13	55.49	43.6	5908	984	10.32	4.21	484	112
HM	300×200	294	200	8	12	13	71.05	55.8	10858	1602	12.36	4.75	739	160
HM	350×250	340	250	9	14	13	99.53	78.1	20867	3648	14.48	6.05	1227	292
HM	400×300	390	300	10	16	13	133.25	104.6	37363	7203	16.75	7.35	1916	480
HM	450×300	440	300	11	18	13	153.89	120.8	54067	8105	18.74	7.26	2458	540
HM	500×300	488	300	11	18	13	159.17	124.9	67916	8106	20.66	7.14	2783	540
HM	600×300	588	300	12	20	13	187.21	147.0	112827	9009	24.55	6.94	3838	601

HN — Narrow Flange H Beam

Type	Size H×B (mm)	Section dimensions (mm)					Area cm²	kg/m	Inertia cm⁴		Radius cm		Section modulus cm³
Type	Size H×B (mm)	H	B	t1	t2	r	Area cm²	kg/m	Ix	Iy	ix	iy	Wx	Wy
HN	100×50	100	50	5	7	8	11.85	9.3	191	14.7	4.02	1.11	38.2	5.9
HN	150×75	150	75	5	7	8	17.85	14.0	646	49.4	6.01	1.66	86.1	13.2
HN	200×100	200	100	5.5	8	8	26.67	20.9	1753	134	8.11	2.24	175	26.7
HN	250×125	250	125	6	9	8	36.97	29.0	3868	294	10.23	2.82	309	47.0
HN	300×150	300	150	6.5	9	13	46.78	36.7	6829	507	12.08	3.29	455	67.6
HN	350×175	350	175	7	11	13	62.91	49.4	12980	984	14.36	3.95	742	112
HN	400×200	400	200	8	13	13	83.37	65.4	22775	1735	16.53	4.56	1139	174
HN	450×200	450	200	9	14	13	95.43	74.9	31973	1870	18.30	4.43	1421	187
HN	500×200	500	200	10	16	13	112.25	88.1	45685	2138	20.17	4.36	1827	214
HN	600×200	600	200	11	17	13	130.21	102.2	74989	2271	23.99	4.18	2500	227

H Beam Manufacturing Process

VIKKINS maintains a highly efficient management team, employs world-class equipment, and follows a rigorous manufacturing process to ensure product quality.

① Multihead Cutting

Steel plate cut to precise dimensions by multi-head CNC machine

② H Beam Assembling

Web and flanges assembled by T-tape tacking before full welding

③ H Steel Ganty Welding

Submerged arc welding (SAW) for full penetration, NDT-verified joints

④ Flange Straightened

H-steel flanges precision-rectified to dimensional tolerance

Complete Manufacturing Flow

14 STEPS

1 Plate

2 Cutting

3 Suspending

4 T Tape Assembling

5 90° Verturning

6 Hoisting

7 H-section Assemble

8 H-section Assemble

9 H-section Assemble

10 H-section Assemble

11 H-section Assemble

12 H-section Assemble

13 H-section Assemble

14 H-section Assemble

C Purlin & Z Purlin

C and Z purlins serve as primary elements of the structural framework, providing support in either simply supported or continuous configurations. Material grade Q235 steel unless otherwise specified.

Item	Specification mm				kg/m	Inertia cm⁴
Item	h	b	a	t	M	Jx	Jy
1	80	40	20	2.5	3.925	46.22	11.56
2	100	50	20	2.5	4.710	90.56	21.30
3	100	50	20	3.0	5.652	106.60	24.78
4	140	50	20	2.5	5.495	186.80	22.11
5	140	50	20	3.0	6.594	235.90	27.84
6	160	60	20	3.0	7.536	361.00	45.14
7	160	70	20	3.0	8.007	373.60	60.42
8	180	70	20	3.0	8.478	523.50	68.12

Item	Specification mm				kg/m	Inertia cm⁴
Item	h	b	a	t	M	Jx	Jy
1	200	70	20	3.0	8.949	669.90	70.40
2	220	70	20	3.0	9.420	838.40	72.44
3	240	70	20	3.0	9.891	1030.00	74.28
4	250	70	20	3.0	10.127	1135.00	75.13
5	280	70	20	3.0	10.833	1488.00	74.77
6	350	80	20	3.0	12.953	2735.00	114.20
7	400	80	20	3.0	14.130	3783.00	117.80
8	450	100	20	3.0	16.250	5650.00	212.20

Item	Specification mm				kg/m	Inertia cm⁴
Item	h	b	a	t	M	Jx	Jy
1	140	50	20	3.0	6.594	217.26	40.83
2	160	50	20	2.5	5.889	259.338	36.367
3	180	60	20	2.5	6.673	383.564	58.785
4	180	60	20	3.0	8.007	449.734	67.609
5	200	60	20	2.5	7.065	492.800	56.788
6	200	60	20	3.0	8.478	578.468	67.613