ISO13795 Welded Steel Marine Bollard

ISO13795 Welded Steel Marine Bollard  

The welded steel bollard is a double bitt bollard according to the standard of ISO13795, suitable for installation on sea-going vessels to meet normal mooring and towing requirements. The posts of the bollards shall be constructed from steel tubes or formed from the plate. A low-friction surface coating is not recommended so as to increase the holding force of the mooring rope under figure-of-eight belay according to ISO standard. Depending on the construction, the mooring bollards shall be classified as two types, which are Type A – with compact base plate and Type B – with a wide base plate.

For mooring purpose, the maximum load in kN on the rope that should normally be applied in-service conditions. For towing purposes, the maximum load on the rope applied to a bollard subjected to a tug boat pull by using an eye splice at the end of the towing rope to connect to the bollard. And the SWL for mooring and towing are different.

The posts of the bollards shall be constructed from steel tubes or formed from the plates. Both the steel tubes and steel plates should have a yield point of not less than 235N/mm2. The fins of the welded steel bollard shall be installed to keep the ropes as low as possible so as to reduce the loads to the bollard posts from the mooring or towing ropes. And the eye plates for tying the stopping-off rope or chain shall be provided. YSmarines is a professional manufacturer and supplier with superior quality ISO13795 marine bollard, the most affordable price guaranteed.

 

Features Of ISO13795 Marine Bollard 

With smooth edges and surface
Expressed SWL or TOW in tonnes (letter “t”) marking clearly on a surface
International load and stress criteria
The fins and eye plates are provided

Technical Parameters Of ISO13795 Welded Steel Bollard

ISO13795 Type A Bollard
Material: weldable steel plates
SWL for one-rope use: 54kN to 1401kN
Base: with a compact base plate

ISO13795 Type B Bollard 

Material: weldable steel plates or steel tubes
SWL for one-rope use: 54kN to 1401kN
Base: with a wide base plate
Surface Treatment: without any visible flaws or imperfections and coated externally with an anti-corrosion protective finish. 

Nominal Size	Dimensions (mm)							SWL						Weight
								For mooring purpose				For towing purpose
	D1	D2	H1	B	E	L	t	One-rope use		Two-rope use
								(kN)	(t)	(kN)	(t)	(kN)	(t)	(kg)
150	165.2	185	330	155	–	400	8	54	5.5	49	5	383	10	29
200	216.3	240	395	205	–	500	8	82	8.4	65	6.7	579	13	46
250A	267.4	290	505	250	–	630	12	156	16	134	14	1315	27	107
250B	267.4	290	505	250	–	630	10	127	13	108	11	215	22	91
300A	318.5	340	600	290	300	800	21.5	332	34	306	31	3365	62	281
300B	318.5	340	600	290	300	800	12	186	19	161	16	352	36	166
350A	355.6	380	685	340	350	890	26	443	45	418	43	5062	85	431
350B	355.6	380	685	340	350	890	14	244	25	216	22	2855	50	241
400A	406.4	430	730	380	380	1000	28	594	61	521	53	6632	106	570
400B	406.4	430	730	380	380	1000	15	326	33	269	27	3816	67	322
450A	457.2	480	770	425	410	1100	29	753	77	612	62	8201	124	712
450B	457.2	480	770	425	410	1100	14.5	382	39	292	30	4483	78	379
500A	508	530	830	480	460	1250	32	992	101	757	77	10928	154	960
500B	508	530	830	480	460	1250	14.5	457	47	326	33	5474	93	465
550A	558.8	580	900	520	540	1380	31	1131	115	812	83	12635	165	1123

Applications Of ISO13795 Welded Steel Marine Bollard